Home / 259,915.58-389,921.98-82,374.92

Finding the Fourth Proportional to 259,915.58, 389,921.98 and 82,374.92

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Solution

The fourth proportional to 259,915.58, 389,921.98 and 82,374.92 is: 123,577.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,915.58 : 389,921.98 = 82,374.92 : x
  2. Step 2: Convert to fraction form
    259,915.58/389,921.98 = 82,374.92/x
  3. Step 3: Cross multiply
    259,915.58x = 389,921.98 × 82,374.92
  4. Step 4: Simplify right side
    259,915.58x = 32,119,791,908.74
  5. Step 5: Solve for x
    x = 32,119,791,908.74/259,915.58
  6. Step 6: Final answer
    x = 123,577.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.