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Finding the Fourth Proportional to 272,562.90, 408,863.55 and 154,290.90

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Solution

The fourth proportional to 272,562.90, 408,863.55 and 154,290.90 is: 231,447.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,562.90 : 408,863.55 = 154,290.90 : x
  2. Step 2: Convert to fraction form
    272,562.90/408,863.55 = 154,290.90/x
  3. Step 3: Cross multiply
    272,562.90x = 408,863.55 × 154,290.90
  4. Step 4: Simplify right side
    272,562.90x = 63,083,925,106.70
  5. Step 5: Solve for x
    x = 63,083,925,106.70/272,562.90
  6. Step 6: Final answer
    x = 231,447.22

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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.