Home / 251,825.20-347,508.26-138,640.66

Finding the Fourth Proportional to 251,825.20, 347,508.26 and 138,640.66

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Solution

The fourth proportional to 251,825.20, 347,508.26 and 138,640.66 is: 191,318.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,825.20 : 347,508.26 = 138,640.66 : x
  2. Step 2: Convert to fraction form
    251,825.20/347,508.26 = 138,640.66/x
  3. Step 3: Cross multiply
    251,825.20x = 347,508.26 × 138,640.66
  4. Step 4: Simplify right side
    251,825.20x = 48,178,773,479.78
  5. Step 5: Solve for x
    x = 48,178,773,479.78/251,825.20
  6. Step 6: Final answer
    x = 191,318.32

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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.