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Finding the Fourth Proportional to 239,287.39, 330,229.59 and 137,312.01

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Solution

The fourth proportional to 239,287.39, 330,229.59 and 137,312.01 is: 189,498.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,287.39 : 330,229.59 = 137,312.01 : x
  2. Step 2: Convert to fraction form
    239,287.39/330,229.59 = 137,312.01/x
  3. Step 3: Cross multiply
    239,287.39x = 330,229.59 × 137,312.01
  4. Step 4: Simplify right side
    239,287.39x = 45,344,488,764.38
  5. Step 5: Solve for x
    x = 45,344,488,764.38/239,287.39
  6. Step 6: Final answer
    x = 189,498.03

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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.