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Finding the Fourth Proportional to 251,679.32, 347,317.52 and 138,502.07

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Solution

The fourth proportional to 251,679.32, 347,317.52 and 138,502.07 is: 191,132.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,679.32 : 347,317.52 = 138,502.07 : x
  2. Step 2: Convert to fraction form
    251,679.32/347,317.52 = 138,502.07/x
  3. Step 3: Cross multiply
    251,679.32x = 347,317.52 × 138,502.07
  4. Step 4: Simplify right side
    251,679.32x = 48,104,193,038.17
  5. Step 5: Solve for x
    x = 48,104,193,038.17/251,679.32
  6. Step 6: Final answer
    x = 191,132.88

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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.