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Finding the Fourth Proportional to 453,012.19, 679,522.39 and 137,469.11

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Solution

The fourth proportional to 453,012.19, 679,522.39 and 137,469.11 is: 206,204.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,012.19 : 679,522.39 = 137,469.11 : x
  2. Step 2: Convert to fraction form
    453,012.19/679,522.39 = 137,469.11/x
  3. Step 3: Cross multiply
    453,012.19x = 679,522.39 × 137,469.11
  4. Step 4: Simplify right side
    453,012.19x = 93,413,334,437.09
  5. Step 5: Solve for x
    x = 93,413,334,437.09/453,012.19
  6. Step 6: Final answer
    x = 206,204.90

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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.