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Finding the Fourth Proportional to 366,979.80, 550,340.10 and 130,330.20

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Solution

The fourth proportional to 366,979.80, 550,340.10 and 130,330.20 is: 195,449.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,979.80 : 550,340.10 = 130,330.20 : x
  2. Step 2: Convert to fraction form
    366,979.80/550,340.10 = 130,330.20/x
  3. Step 3: Cross multiply
    366,979.80x = 550,340.10 × 130,330.20
  4. Step 4: Simplify right side
    366,979.80x = 71,725,935,301.02
  5. Step 5: Solve for x
    x = 71,725,935,301.02/366,979.80
  6. Step 6: Final answer
    x = 195,449.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.