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Finding the Fourth Proportional to 318,148.46, 438,999.15 and 187,248.27

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Solution

The fourth proportional to 318,148.46, 438,999.15 and 187,248.27 is: 258,375.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,148.46 : 438,999.15 = 187,248.27 : x
  2. Step 2: Convert to fraction form
    318,148.46/438,999.15 = 187,248.27/x
  3. Step 3: Cross multiply
    318,148.46x = 438,999.15 × 187,248.27
  4. Step 4: Simplify right side
    318,148.46x = 82,201,831,368.97
  5. Step 5: Solve for x
    x = 82,201,831,368.97/318,148.46
  6. Step 6: Final answer
    x = 258,375.70

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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.