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Finding the Fourth Proportional to 403,314.80, 604,972.20 and 137,375.60

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Solution

The fourth proportional to 403,314.80, 604,972.20 and 137,375.60 is: 206,063.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,314.80 : 604,972.20 = 137,375.60 : x
  2. Step 2: Convert to fraction form
    403,314.80/604,972.20 = 137,375.60/x
  3. Step 3: Cross multiply
    403,314.80x = 604,972.20 × 137,375.60
  4. Step 4: Simplify right side
    403,314.80x = 83,108,418,958.32
  5. Step 5: Solve for x
    x = 83,108,418,958.32/403,314.80
  6. Step 6: Final answer
    x = 206,063.40

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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.