Home / 240,278.17-331,575.51-131,385.05

Finding the Fourth Proportional to 240,278.17, 331,575.51 and 131,385.05

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Solution

The fourth proportional to 240,278.17, 331,575.51 and 131,385.05 is: 181,306.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,278.17 : 331,575.51 = 131,385.05 : x
  2. Step 2: Convert to fraction form
    240,278.17/331,575.51 = 131,385.05/x
  3. Step 3: Cross multiply
    240,278.17x = 331,575.51 × 131,385.05
  4. Step 4: Simplify right side
    240,278.17x = 43,564,065,319.87
  5. Step 5: Solve for x
    x = 43,564,065,319.87/240,278.17
  6. Step 6: Final answer
    x = 181,306.80

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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.