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Finding the Fourth Proportional to 295,079.20, 442,618.80 and 81,846.70

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Solution

The fourth proportional to 295,079.20, 442,618.80 and 81,846.70 is: 122,770.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,079.20 : 442,618.80 = 81,846.70 : x
  2. Step 2: Convert to fraction form
    295,079.20/442,618.80 = 81,846.70/x
  3. Step 3: Cross multiply
    295,079.20x = 442,618.80 × 81,846.70
  4. Step 4: Simplify right side
    295,079.20x = 36,226,888,137.96
  5. Step 5: Solve for x
    x = 36,226,888,137.96/295,079.20
  6. Step 6: Final answer
    x = 122,770.05

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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.