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Finding the Fourth Proportional to 418,876.34, 628,301.13 and 134,565.73

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Solution

The fourth proportional to 418,876.34, 628,301.13 and 134,565.73 is: 201,844.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,876.34 : 628,301.13 = 134,565.73 : x
  2. Step 2: Convert to fraction form
    418,876.34/628,301.13 = 134,565.73/x
  3. Step 3: Cross multiply
    418,876.34x = 628,301.13 × 134,565.73
  4. Step 4: Simplify right side
    418,876.34x = 84,547,800,218.27
  5. Step 5: Solve for x
    x = 84,547,800,218.27/418,876.34
  6. Step 6: Final answer
    x = 201,844.30

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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.