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Finding the Fourth Proportional to 525,245.22, 724,808.66 and 310,405.28

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Solution

The fourth proportional to 525,245.22, 724,808.66 and 310,405.28 is: 428,341.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,245.22 : 724,808.66 = 310,405.28 : x
  2. Step 2: Convert to fraction form
    525,245.22/724,808.66 = 310,405.28/x
  3. Step 3: Cross multiply
    525,245.22x = 724,808.66 × 310,405.28
  4. Step 4: Simplify right side
    525,245.22x = 224,984,429,877.66
  5. Step 5: Solve for x
    x = 224,984,429,877.66/525,245.22
  6. Step 6: Final answer
    x = 428,341.70

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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.