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Finding the Fourth Proportional to 525,226.76, 724,803.09 and 321,262.71

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Solution

The fourth proportional to 525,226.76, 724,803.09 and 321,262.71 is: 443,336.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,226.76 : 724,803.09 = 321,262.71 : x
  2. Step 2: Convert to fraction form
    525,226.76/724,803.09 = 321,262.71/x
  3. Step 3: Cross multiply
    525,226.76x = 724,803.09 × 321,262.71
  4. Step 4: Simplify right side
    525,226.76x = 232,852,199,679.45
  5. Step 5: Solve for x
    x = 232,852,199,679.45/525,226.76
  6. Step 6: Final answer
    x = 443,336.51

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.