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Finding the Fourth Proportional to 324,616.80, 486,925.20 and 312,175.20

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Solution

The fourth proportional to 324,616.80, 486,925.20 and 312,175.20 is: 468,262.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,616.80 : 486,925.20 = 312,175.20 : x
  2. Step 2: Convert to fraction form
    324,616.80/486,925.20 = 312,175.20/x
  3. Step 3: Cross multiply
    324,616.80x = 486,925.20 × 312,175.20
  4. Step 4: Simplify right side
    324,616.80x = 152,005,971,695.04
  5. Step 5: Solve for x
    x = 152,005,971,695.04/324,616.80
  6. Step 6: Final answer
    x = 468,262.80

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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.