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Finding the Fourth Proportional to 636,399.31, 954,598.60 and 187,123.90

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Solution

The fourth proportional to 636,399.31, 954,598.60 and 187,123.90 is: 280,685.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,399.31 : 954,598.60 = 187,123.90 : x
  2. Step 2: Convert to fraction form
    636,399.31/954,598.60 = 187,123.90/x
  3. Step 3: Cross multiply
    636,399.31x = 954,598.60 × 187,123.90
  4. Step 4: Simplify right side
    636,399.31x = 178,628,212,966.54
  5. Step 5: Solve for x
    x = 178,628,212,966.54/636,399.31
  6. Step 6: Final answer
    x = 280,685.74

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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.