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Finding the Fourth Proportional to 311,415.48, 429,753.33 and 168,175.53

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Solution

The fourth proportional to 311,415.48, 429,753.33 and 168,175.53 is: 232,082.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,415.48 : 429,753.33 = 168,175.53 : x
  2. Step 2: Convert to fraction form
    311,415.48/429,753.33 = 168,175.53/x
  3. Step 3: Cross multiply
    311,415.48x = 429,753.33 × 168,175.53
  4. Step 4: Simplify right side
    311,415.48x = 72,273,994,042.01
  5. Step 5: Solve for x
    x = 72,273,994,042.01/311,415.48
  6. Step 6: Final answer
    x = 232,082.21

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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.