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Finding the Fourth Proportional to 663,617.20, 995,425.80 and 164,981.20

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Solution

The fourth proportional to 663,617.20, 995,425.80 and 164,981.20 is: 247,471.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,617.20 : 995,425.80 = 164,981.20 : x
  2. Step 2: Convert to fraction form
    663,617.20/995,425.80 = 164,981.20/x
  3. Step 3: Cross multiply
    663,617.20x = 995,425.80 × 164,981.20
  4. Step 4: Simplify right side
    663,617.20x = 164,226,542,994.96
  5. Step 5: Solve for x
    x = 164,226,542,994.96/663,617.20
  6. Step 6: Final answer
    x = 247,471.80

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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.