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Finding the Fourth Proportional to 324,697.20, 487,122.60 and 103,081.20

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Solution

The fourth proportional to 324,697.20, 487,122.60 and 103,081.20 is: 154,646.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,697.20 : 487,122.60 = 103,081.20 : x
  2. Step 2: Convert to fraction form
    324,697.20/487,122.60 = 103,081.20/x
  3. Step 3: Cross multiply
    324,697.20x = 487,122.60 × 103,081.20
  4. Step 4: Simplify right side
    324,697.20x = 50,213,182,155.12
  5. Step 5: Solve for x
    x = 50,213,182,155.12/324,697.20
  6. Step 6: Final answer
    x = 154,646.18

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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.