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Finding the Fourth Proportional to 251,785.56, 347,463.14 and 138,608.30

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Solution

The fourth proportional to 251,785.56, 347,463.14 and 138,608.30 is: 191,278.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,785.56 : 347,463.14 = 138,608.30 : x
  2. Step 2: Convert to fraction form
    251,785.56/347,463.14 = 138,608.30/x
  3. Step 3: Cross multiply
    251,785.56x = 347,463.14 × 138,608.30
  4. Step 4: Simplify right side
    251,785.56x = 48,161,275,148.06
  5. Step 5: Solve for x
    x = 48,161,275,148.06/251,785.56
  6. Step 6: Final answer
    x = 191,278.94

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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.