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Finding the Fourth Proportional to 318,640.83, 439,736.88 and 175,414.20

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Solution

The fourth proportional to 318,640.83, 439,736.88 and 175,414.20 is: 242,078.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,640.83 : 439,736.88 = 175,414.20 : x
  2. Step 2: Convert to fraction form
    318,640.83/439,736.88 = 175,414.20/x
  3. Step 3: Cross multiply
    318,640.83x = 439,736.88 × 175,414.20
  4. Step 4: Simplify right side
    318,640.83x = 77,136,093,015.70
  5. Step 5: Solve for x
    x = 77,136,093,015.70/318,640.83
  6. Step 6: Final answer
    x = 242,078.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.