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Finding the Fourth Proportional to 525,233.85, 724,812.86 and 321,269.78

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Solution

The fourth proportional to 525,233.85, 724,812.86 and 321,269.78 is: 443,346.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,233.85 : 724,812.86 = 321,269.78 : x
  2. Step 2: Convert to fraction form
    525,233.85/724,812.86 = 321,269.78/x
  3. Step 3: Cross multiply
    525,233.85x = 724,812.86 × 321,269.78
  4. Step 4: Simplify right side
    525,233.85x = 232,860,470,688.58
  5. Step 5: Solve for x
    x = 232,860,470,688.58/525,233.85
  6. Step 6: Final answer
    x = 443,346.28

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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.