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Finding the Fourth Proportional to 329,215.70, 493,527.90 and 129,672.20

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Solution

The fourth proportional to 329,215.70, 493,527.90 and 129,672.20 is: 194,391.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,215.70 : 493,527.90 = 129,672.20 : x
  2. Step 2: Convert to fraction form
    329,215.70/493,527.90 = 129,672.20/x
  3. Step 3: Cross multiply
    329,215.70x = 493,527.90 × 129,672.20
  4. Step 4: Simplify right side
    329,215.70x = 63,996,848,554.38
  5. Step 5: Solve for x
    x = 63,996,848,554.38/329,215.70
  6. Step 6: Final answer
    x = 194,391.85

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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.