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Finding the Fourth Proportional to 240,539, 331,921.26 and 143,723.58

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Solution

The fourth proportional to 240,539, 331,921.26 and 143,723.58 is: 198,325.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,539 : 331,921.26 = 143,723.58 : x
  2. Step 2: Convert to fraction form
    240,539/331,921.26 = 143,723.58/x
  3. Step 3: Cross multiply
    240,539x = 331,921.26 × 143,723.58
  4. Step 4: Simplify right side
    240,539x = 47,704,911,765.31
  5. Step 5: Solve for x
    x = 47,704,911,765.31/240,539
  6. Step 6: Final answer
    x = 198,325.06

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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.