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Finding the Fourth Proportional to 251,647, 347,275.32 and 138,472.18

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Solution

The fourth proportional to 251,647, 347,275.32 and 138,472.18 is: 191,092.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,647 : 347,275.32 = 138,472.18 : x
  2. Step 2: Convert to fraction form
    251,647/347,275.32 = 138,472.18/x
  3. Step 3: Cross multiply
    251,647x = 347,275.32 × 138,472.18
  4. Step 4: Simplify right side
    251,647x = 48,087,970,620.60
  5. Step 5: Solve for x
    x = 48,087,970,620.60/251,647
  6. Step 6: Final answer
    x = 191,092.96

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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.