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Finding the Fourth Proportional to 247,590.40, 371,531.40 and 89,834.80

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Solution

The fourth proportional to 247,590.40, 371,531.40 and 89,834.80 is: 134,805.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,590.40 : 371,531.40 = 89,834.80 : x
  2. Step 2: Convert to fraction form
    247,590.40/371,531.40 = 89,834.80/x
  3. Step 3: Cross multiply
    247,590.40x = 371,531.40 × 89,834.80
  4. Step 4: Simplify right side
    247,590.40x = 33,376,449,012.72
  5. Step 5: Solve for x
    x = 33,376,449,012.72/247,590.40
  6. Step 6: Final answer
    x = 134,805.10

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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.