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Finding the Fourth Proportional to 240,456.80, 331,801.53 and 138,515.60

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Solution

The fourth proportional to 240,456.80, 331,801.53 and 138,515.60 is: 191,134.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,456.80 : 331,801.53 = 138,515.60 : x
  2. Step 2: Convert to fraction form
    240,456.80/331,801.53 = 138,515.60/x
  3. Step 3: Cross multiply
    240,456.80x = 331,801.53 × 138,515.60
  4. Step 4: Simplify right side
    240,456.80x = 45,959,688,008.87
  5. Step 5: Solve for x
    x = 45,959,688,008.87/240,456.80
  6. Step 6: Final answer
    x = 191,134.91

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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.