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Finding the Fourth Proportional to 329,342.16, 494,003.28 and 129,518.40

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Solution

The fourth proportional to 329,342.16, 494,003.28 and 129,518.40 is: 194,273.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,342.16 : 494,003.28 = 129,518.40 : x
  2. Step 2: Convert to fraction form
    329,342.16/494,003.28 = 129,518.40/x
  3. Step 3: Cross multiply
    329,342.16x = 494,003.28 × 129,518.40
  4. Step 4: Simplify right side
    329,342.16x = 63,982,514,420.35
  5. Step 5: Solve for x
    x = 63,982,514,420.35/329,342.16
  6. Step 6: Final answer
    x = 194,273.68

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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.