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Finding the Fourth Proportional to 479,249.40, 718,874.10 and 146,782.20

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Solution

The fourth proportional to 479,249.40, 718,874.10 and 146,782.20 is: 220,173.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,249.40 : 718,874.10 = 146,782.20 : x
  2. Step 2: Convert to fraction form
    479,249.40/718,874.10 = 146,782.20/x
  3. Step 3: Cross multiply
    479,249.40x = 718,874.10 × 146,782.20
  4. Step 4: Simplify right side
    479,249.40x = 105,517,921,921.02
  5. Step 5: Solve for x
    x = 105,517,921,921.02/479,249.40
  6. Step 6: Final answer
    x = 220,173.30

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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.