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Finding the Fourth Proportional to 239,597.55, 359,439.36 and 81,789.11

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Solution

The fourth proportional to 239,597.55, 359,439.36 and 81,789.11 is: 122,698.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,597.55 : 359,439.36 = 81,789.11 : x
  2. Step 2: Convert to fraction form
    239,597.55/359,439.36 = 81,789.11/x
  3. Step 3: Cross multiply
    239,597.55x = 359,439.36 × 81,789.11
  4. Step 4: Simplify right side
    239,597.55x = 29,398,223,556.17
  5. Step 5: Solve for x
    x = 29,398,223,556.17/239,597.55
  6. Step 6: Final answer
    x = 122,698.35

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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.