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Finding the Fourth Proportional to 240,989.95, 332,607.27 and 138,997.12

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Solution

The fourth proportional to 240,989.95, 332,607.27 and 138,997.12 is: 191,839.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,989.95 : 332,607.27 = 138,997.12 : x
  2. Step 2: Convert to fraction form
    240,989.95/332,607.27 = 138,997.12/x
  3. Step 3: Cross multiply
    240,989.95x = 332,607.27 × 138,997.12
  4. Step 4: Simplify right side
    240,989.95x = 46,231,452,621.06
  5. Step 5: Solve for x
    x = 46,231,452,621.06/240,989.95
  6. Step 6: Final answer
    x = 191,839.75

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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.