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Finding the Fourth Proportional to 458,244.40, 687,426.90 and 170,016.78

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Solution

The fourth proportional to 458,244.40, 687,426.90 and 170,016.78 is: 255,047.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,244.40 : 687,426.90 = 170,016.78 : x
  2. Step 2: Convert to fraction form
    458,244.40/687,426.90 = 170,016.78/x
  3. Step 3: Cross multiply
    458,244.40x = 687,426.90 × 170,016.78
  4. Step 4: Simplify right side
    458,244.40x = 116,874,108,023.38
  5. Step 5: Solve for x
    x = 116,874,108,023.38/458,244.40
  6. Step 6: Final answer
    x = 255,047.54

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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.