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Finding the Fourth Proportional to 423,394.98, 634,951.53 and 123,892.62

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Solution

The fourth proportional to 423,394.98, 634,951.53 and 123,892.62 is: 185,797.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,394.98 : 634,951.53 = 123,892.62 : x
  2. Step 2: Convert to fraction form
    423,394.98/634,951.53 = 123,892.62/x
  3. Step 3: Cross multiply
    423,394.98x = 634,951.53 × 123,892.62
  4. Step 4: Simplify right side
    423,394.98x = 78,665,808,624.71
  5. Step 5: Solve for x
    x = 78,665,808,624.71/423,394.98
  6. Step 6: Final answer
    x = 185,797.69

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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.