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Finding the Fourth Proportional to 238,556.16, 329,210.10 and 129,660.48

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Solution

The fourth proportional to 238,556.16, 329,210.10 and 129,660.48 is: 178,932.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,556.16 : 329,210.10 = 129,660.48 : x
  2. Step 2: Convert to fraction form
    238,556.16/329,210.10 = 129,660.48/x
  3. Step 3: Cross multiply
    238,556.16x = 329,210.10 × 129,660.48
  4. Step 4: Simplify right side
    238,556.16x = 42,685,539,586.85
  5. Step 5: Solve for x
    x = 42,685,539,586.85/238,556.16
  6. Step 6: Final answer
    x = 178,932.88

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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.