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Finding the Fourth Proportional to 399,307.62, 598,761.63 and 132,975.30

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Solution

The fourth proportional to 399,307.62, 598,761.63 and 132,975.30 is: 199,396.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,307.62 : 598,761.63 = 132,975.30 : x
  2. Step 2: Convert to fraction form
    399,307.62/598,761.63 = 132,975.30/x
  3. Step 3: Cross multiply
    399,307.62x = 598,761.63 × 132,975.30
  4. Step 4: Simplify right side
    399,307.62x = 79,620,507,377.74
  5. Step 5: Solve for x
    x = 79,620,507,377.74/399,307.62
  6. Step 6: Final answer
    x = 199,396.41

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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.