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Finding the Fourth Proportional to 239,389.67, 330,358.20 and 130,494.90

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Solution

The fourth proportional to 239,389.67, 330,358.20 and 130,494.90 is: 180,083.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,389.67 : 330,358.20 = 130,494.90 : x
  2. Step 2: Convert to fraction form
    239,389.67/330,358.20 = 130,494.90/x
  3. Step 3: Cross multiply
    239,389.67x = 330,358.20 × 130,494.90
  4. Step 4: Simplify right side
    239,389.67x = 43,110,059,531.42
  5. Step 5: Solve for x
    x = 43,110,059,531.42/239,389.67
  6. Step 6: Final answer
    x = 180,083.21

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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.