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Finding the Fourth Proportional to 424,236.92, 636,220.92 and 143,688.56

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Solution

The fourth proportional to 424,236.92, 636,220.92 and 143,688.56 is: 215,487.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,236.92 : 636,220.92 = 143,688.56 : x
  2. Step 2: Convert to fraction form
    424,236.92/636,220.92 = 143,688.56/x
  3. Step 3: Cross multiply
    424,236.92x = 636,220.92 × 143,688.56
  4. Step 4: Simplify right side
    424,236.92x = 91,417,667,836.68
  5. Step 5: Solve for x
    x = 91,417,667,836.68/424,236.92
  6. Step 6: Final answer
    x = 215,487.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.