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Finding the Fourth Proportional to 329,643.92, 494,132.40 and 129,886.64

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Solution

The fourth proportional to 329,643.92, 494,132.40 and 129,886.64 is: 194,698.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,643.92 : 494,132.40 = 129,886.64 : x
  2. Step 2: Convert to fraction form
    329,643.92/494,132.40 = 129,886.64/x
  3. Step 3: Cross multiply
    329,643.92x = 494,132.40 × 129,886.64
  4. Step 4: Simplify right side
    329,643.92x = 64,181,197,151.14
  5. Step 5: Solve for x
    x = 64,181,197,151.14/329,643.92
  6. Step 6: Final answer
    x = 194,698.56

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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.