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Finding the Fourth Proportional to 403,576.60, 604,932.90 and 137,090.20

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Solution

The fourth proportional to 403,576.60, 604,932.90 and 137,090.20 is: 205,488.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,576.60 : 604,932.90 = 137,090.20 : x
  2. Step 2: Convert to fraction form
    403,576.60/604,932.90 = 137,090.20/x
  3. Step 3: Cross multiply
    403,576.60x = 604,932.90 × 137,090.20
  4. Step 4: Simplify right side
    403,576.60x = 82,930,372,247.58
  5. Step 5: Solve for x
    x = 82,930,372,247.58/403,576.60
  6. Step 6: Final answer
    x = 205,488.55

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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.