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Finding the Fourth Proportional to 239,298.98, 330,234.81 and 131,872.87

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Solution

The fourth proportional to 239,298.98, 330,234.81 and 131,872.87 is: 181,985.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,298.98 : 330,234.81 = 131,872.87 : x
  2. Step 2: Convert to fraction form
    239,298.98/330,234.81 = 131,872.87/x
  3. Step 3: Cross multiply
    239,298.98x = 330,234.81 × 131,872.87
  4. Step 4: Simplify right side
    239,298.98x = 43,549,010,517.43
  5. Step 5: Solve for x
    x = 43,549,010,517.43/239,298.98
  6. Step 6: Final answer
    x = 181,985.78

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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.