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Finding the Fourth Proportional to 329,722.40, 494,713.20 and 130,008.80

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Solution

The fourth proportional to 329,722.40, 494,713.20 and 130,008.80 is: 195,064.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,722.40 : 494,713.20 = 130,008.80 : x
  2. Step 2: Convert to fraction form
    329,722.40/494,713.20 = 130,008.80/x
  3. Step 3: Cross multiply
    329,722.40x = 494,713.20 × 130,008.80
  4. Step 4: Simplify right side
    329,722.40x = 64,317,069,476.16
  5. Step 5: Solve for x
    x = 64,317,069,476.16/329,722.40
  6. Step 6: Final answer
    x = 195,064.30

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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.