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Finding the Fourth Proportional to 486,293.20, 729,094.20 and 220,181.20

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Solution

The fourth proportional to 486,293.20, 729,094.20 and 220,181.20 is: 330,115.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,293.20 : 729,094.20 = 220,181.20 : x
  2. Step 2: Convert to fraction form
    486,293.20/729,094.20 = 220,181.20/x
  3. Step 3: Cross multiply
    486,293.20x = 729,094.20 × 220,181.20
  4. Step 4: Simplify right side
    486,293.20x = 160,532,835,869.04
  5. Step 5: Solve for x
    x = 160,532,835,869.04/486,293.20
  6. Step 6: Final answer
    x = 330,115.32

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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.