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Finding the Fourth Proportional to 192,801.12, 288,979.92 and 74,420.64

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Solution

The fourth proportional to 192,801.12, 288,979.92 and 74,420.64 is: 111,545.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,801.12 : 288,979.92 = 74,420.64 : x
  2. Step 2: Convert to fraction form
    192,801.12/288,979.92 = 74,420.64/x
  3. Step 3: Cross multiply
    192,801.12x = 288,979.92 × 74,420.64
  4. Step 4: Simplify right side
    192,801.12x = 21,506,070,593.55
  5. Step 5: Solve for x
    x = 21,506,070,593.55/192,801.12
  6. Step 6: Final answer
    x = 111,545.36

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1.5x scale

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.