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Finding the Fourth Proportional to 239,149.73, 330,041.59 and 131,719.74

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Solution

The fourth proportional to 239,149.73, 330,041.59 and 131,719.74 is: 181,781.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,149.73 : 330,041.59 = 131,719.74 : x
  2. Step 2: Convert to fraction form
    239,149.73/330,041.59 = 131,719.74/x
  3. Step 3: Cross multiply
    239,149.73x = 330,041.59 × 131,719.74
  4. Step 4: Simplify right side
    239,149.73x = 43,472,990,857.03
  5. Step 5: Solve for x
    x = 43,472,990,857.03/239,149.73
  6. Step 6: Final answer
    x = 181,781.47

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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.