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Finding the Fourth Proportional to 525,155.28, 724,710.60 and 286,691.28

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Solution

The fourth proportional to 525,155.28, 724,710.60 and 286,691.28 is: 395,631.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,155.28 : 724,710.60 = 286,691.28 : x
  2. Step 2: Convert to fraction form
    525,155.28/724,710.60 = 286,691.28/x
  3. Step 3: Cross multiply
    525,155.28x = 724,710.60 × 286,691.28
  4. Step 4: Simplify right side
    525,155.28x = 207,768,209,543.57
  5. Step 5: Solve for x
    x = 207,768,209,543.57/525,155.28
  6. Step 6: Final answer
    x = 395,631.95

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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.