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Finding the Fourth Proportional to 324,697.20, 487,045.80 and 245,965.20

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Solution

The fourth proportional to 324,697.20, 487,045.80 and 245,965.20 is: 368,947.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,697.20 : 487,045.80 = 245,965.20 : x
  2. Step 2: Convert to fraction form
    324,697.20/487,045.80 = 245,965.20/x
  3. Step 3: Cross multiply
    324,697.20x = 487,045.80 × 245,965.20
  4. Step 4: Simplify right side
    324,697.20x = 119,796,317,606.16
  5. Step 5: Solve for x
    x = 119,796,317,606.16/324,697.20
  6. Step 6: Final answer
    x = 368,947.80

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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.