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Finding the Fourth Proportional to 378,082.10, 567,123.15 and 111,818.90

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Solution

The fourth proportional to 378,082.10, 567,123.15 and 111,818.90 is: 167,728.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,082.10 : 567,123.15 = 111,818.90 : x
  2. Step 2: Convert to fraction form
    378,082.10/567,123.15 = 111,818.90/x
  3. Step 3: Cross multiply
    378,082.10x = 567,123.15 × 111,818.90
  4. Step 4: Simplify right side
    378,082.10x = 63,415,086,797.54
  5. Step 5: Solve for x
    x = 63,415,086,797.54/378,082.10
  6. Step 6: Final answer
    x = 167,728.35

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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.