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Finding the Fourth Proportional to 247,081, 341,008.38 and 156,445.39

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Solution

The fourth proportional to 247,081, 341,008.38 and 156,445.39 is: 215,917.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,081 : 341,008.38 = 156,445.39 : x
  2. Step 2: Convert to fraction form
    247,081/341,008.38 = 156,445.39/x
  3. Step 3: Cross multiply
    247,081x = 341,008.38 × 156,445.39
  4. Step 4: Simplify right side
    247,081x = 53,349,189,002.37
  5. Step 5: Solve for x
    x = 53,349,189,002.37/247,081
  6. Step 6: Final answer
    x = 215,917.81

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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.