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Finding the Fourth Proportional to 329,642.92, 494,130.90 and 129,885.64

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Solution

The fourth proportional to 329,642.92, 494,130.90 and 129,885.64 is: 194,697.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,642.92 : 494,130.90 = 129,885.64 : x
  2. Step 2: Convert to fraction form
    329,642.92/494,130.90 = 129,885.64/x
  3. Step 3: Cross multiply
    329,642.92x = 494,130.90 × 129,885.64
  4. Step 4: Simplify right side
    329,642.92x = 64,180,508,190.28
  5. Step 5: Solve for x
    x = 64,180,508,190.28/329,642.92
  6. Step 6: Final answer
    x = 194,697.06

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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.