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Finding the Fourth Proportional to 384,898.14, 531,171.03 and 215,127.90

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Solution

The fourth proportional to 384,898.14, 531,171.03 and 215,127.90 is: 296,882.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,898.14 : 531,171.03 = 215,127.90 : x
  2. Step 2: Convert to fraction form
    384,898.14/531,171.03 = 215,127.90/x
  3. Step 3: Cross multiply
    384,898.14x = 531,171.03 × 215,127.90
  4. Step 4: Simplify right side
    384,898.14x = 114,269,708,224.74
  5. Step 5: Solve for x
    x = 114,269,708,224.74/384,898.14
  6. Step 6: Final answer
    x = 296,882.98

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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.