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Finding the Fourth Proportional to 247,874.78, 342,129.40 and 140,508.87

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Solution

The fourth proportional to 247,874.78, 342,129.40 and 140,508.87 is: 193,937.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,874.78 : 342,129.40 = 140,508.87 : x
  2. Step 2: Convert to fraction form
    247,874.78/342,129.40 = 140,508.87/x
  3. Step 3: Cross multiply
    247,874.78x = 342,129.40 × 140,508.87
  4. Step 4: Simplify right side
    247,874.78x = 48,072,215,036.51
  5. Step 5: Solve for x
    x = 48,072,215,036.51/247,874.78
  6. Step 6: Final answer
    x = 193,937.50

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1.5x scale

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.