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Finding the Fourth Proportional to 519,911.52, 779,867.30 and 187,487.52

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Solution

The fourth proportional to 519,911.52, 779,867.30 and 187,487.52 is: 281,231.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,911.52 : 779,867.30 = 187,487.52 : x
  2. Step 2: Convert to fraction form
    519,911.52/779,867.30 = 187,487.52/x
  3. Step 3: Cross multiply
    519,911.52x = 779,867.30 × 187,487.52
  4. Step 4: Simplify right side
    519,911.52x = 146,215,386,006.10
  5. Step 5: Solve for x
    x = 146,215,386,006.10/519,911.52
  6. Step 6: Final answer
    x = 281,231.29

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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.