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Finding the Fourth Proportional to 239,079.40, 329,929.62 and 131,649.16

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Solution

The fourth proportional to 239,079.40, 329,929.62 and 131,649.16 is: 181,675.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,079.40 : 329,929.62 = 131,649.16 : x
  2. Step 2: Convert to fraction form
    239,079.40/329,929.62 = 131,649.16/x
  3. Step 3: Cross multiply
    239,079.40x = 329,929.62 × 131,649.16
  4. Step 4: Simplify right side
    239,079.40x = 43,434,957,332.12
  5. Step 5: Solve for x
    x = 43,434,957,332.12/239,079.40
  6. Step 6: Final answer
    x = 181,675.87

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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.