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Finding the Fourth Proportional to 351,897.95, 527,841.98 and 138,667.71

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Solution

The fourth proportional to 351,897.95, 527,841.98 and 138,667.71 is: 207,999.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,897.95 : 527,841.98 = 138,667.71 : x
  2. Step 2: Convert to fraction form
    351,897.95/527,841.98 = 138,667.71/x
  3. Step 3: Cross multiply
    351,897.95x = 527,841.98 × 138,667.71
  4. Step 4: Simplify right side
    351,897.95x = 73,194,638,608.47
  5. Step 5: Solve for x
    x = 73,194,638,608.47/351,897.95
  6. Step 6: Final answer
    x = 207,999.62

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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.