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Finding the Fourth Proportional to 274,494.80, 411,223.80 and 140,920.40

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Solution

The fourth proportional to 274,494.80, 411,223.80 and 140,920.40 is: 211,114.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,494.80 : 411,223.80 = 140,920.40 : x
  2. Step 2: Convert to fraction form
    274,494.80/411,223.80 = 140,920.40/x
  3. Step 3: Cross multiply
    274,494.80x = 411,223.80 × 140,920.40
  4. Step 4: Simplify right side
    274,494.80x = 57,949,822,385.52
  5. Step 5: Solve for x
    x = 57,949,822,385.52/274,494.80
  6. Step 6: Final answer
    x = 211,114.46

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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.