Home / 283,446.72-391,174.20-156,122.28

Finding the Fourth Proportional to 283,446.72, 391,174.20 and 156,122.28

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Solution

The fourth proportional to 283,446.72, 391,174.20 and 156,122.28 is: 215,458.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,446.72 : 391,174.20 = 156,122.28 : x
  2. Step 2: Convert to fraction form
    283,446.72/391,174.20 = 156,122.28/x
  3. Step 3: Cross multiply
    283,446.72x = 391,174.20 × 156,122.28
  4. Step 4: Simplify right side
    283,446.72x = 61,071,007,981.18
  5. Step 5: Solve for x
    x = 61,071,007,981.18/283,446.72
  6. Step 6: Final answer
    x = 215,458.51

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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.