Home / 239,320.91-330,278.45-137,379.38

Finding the Fourth Proportional to 239,320.91, 330,278.45 and 137,379.38

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Solution

The fourth proportional to 239,320.91, 330,278.45 and 137,379.38 is: 189,592.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,320.91 : 330,278.45 = 137,379.38 : x
  2. Step 2: Convert to fraction form
    239,320.91/330,278.45 = 137,379.38/x
  3. Step 3: Cross multiply
    239,320.91x = 330,278.45 × 137,379.38
  4. Step 4: Simplify right side
    239,320.91x = 45,373,446,350.07
  5. Step 5: Solve for x
    x = 45,373,446,350.07/239,320.91
  6. Step 6: Final answer
    x = 189,592.48

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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.