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Finding the Fourth Proportional to 274,354.80, 411,532.20 and 87,385.20

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Solution

The fourth proportional to 274,354.80, 411,532.20 and 87,385.20 is: 131,077.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,354.80 : 411,532.20 = 87,385.20 : x
  2. Step 2: Convert to fraction form
    274,354.80/411,532.20 = 87,385.20/x
  3. Step 3: Cross multiply
    274,354.80x = 411,532.20 × 87,385.20
  4. Step 4: Simplify right side
    274,354.80x = 35,961,823,603.44
  5. Step 5: Solve for x
    x = 35,961,823,603.44/274,354.80
  6. Step 6: Final answer
    x = 131,077.80

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1.5x scale

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.