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Finding the Fourth Proportional to 525,212.92, 724,845.54 and 321,355.72

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Solution

The fourth proportional to 525,212.92, 724,845.54 and 321,355.72 is: 443,502.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,212.92 : 724,845.54 = 321,355.72 : x
  2. Step 2: Convert to fraction form
    525,212.92/724,845.54 = 321,355.72/x
  3. Step 3: Cross multiply
    525,212.92x = 724,845.54 × 321,355.72
  4. Step 4: Simplify right side
    525,212.92x = 232,933,260,395.49
  5. Step 5: Solve for x
    x = 232,933,260,395.49/525,212.92
  6. Step 6: Final answer
    x = 443,502.53

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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.