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Finding the Fourth Proportional to 436,471.80, 654,705 and 112,258.68

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Solution

The fourth proportional to 436,471.80, 654,705 and 112,258.68 is: 168,387.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,471.80 : 654,705 = 112,258.68 : x
  2. Step 2: Convert to fraction form
    436,471.80/654,705 = 112,258.68/x
  3. Step 3: Cross multiply
    436,471.80x = 654,705 × 112,258.68
  4. Step 4: Simplify right side
    436,471.80x = 73,496,319,089.40
  5. Step 5: Solve for x
    x = 73,496,319,089.40/436,471.80
  6. Step 6: Final answer
    x = 168,387.33

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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.