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Finding the Fourth Proportional to 403,616.60, 604,992.90 and 137,130.20

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Solution

The fourth proportional to 403,616.60, 604,992.90 and 137,130.20 is: 205,548.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,616.60 : 604,992.90 = 137,130.20 : x
  2. Step 2: Convert to fraction form
    403,616.60/604,992.90 = 137,130.20/x
  3. Step 3: Cross multiply
    403,616.60x = 604,992.90 × 137,130.20
  4. Step 4: Simplify right side
    403,616.60x = 82,962,797,375.58
  5. Step 5: Solve for x
    x = 82,962,797,375.58/403,616.60
  6. Step 6: Final answer
    x = 205,548.53

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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.