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Finding the Fourth Proportional to 247,868.90, 342,059.11 and 134,691.38

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Solution

The fourth proportional to 247,868.90, 342,059.11 and 134,691.38 is: 185,874.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,868.90 : 342,059.11 = 134,691.38 : x
  2. Step 2: Convert to fraction form
    247,868.90/342,059.11 = 134,691.38/x
  3. Step 3: Cross multiply
    247,868.90x = 342,059.11 × 134,691.38
  4. Step 4: Simplify right side
    247,868.90x = 46,072,411,520.45
  5. Step 5: Solve for x
    x = 46,072,411,520.45/247,868.90
  6. Step 6: Final answer
    x = 185,874.12

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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.