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Finding the Fourth Proportional to 324,668.30, 487,002.45 and 312,226.70

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Solution

The fourth proportional to 324,668.30, 487,002.45 and 312,226.70 is: 468,340.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,668.30 : 487,002.45 = 312,226.70 : x
  2. Step 2: Convert to fraction form
    324,668.30/487,002.45 = 312,226.70/x
  3. Step 3: Cross multiply
    324,668.30x = 487,002.45 × 312,226.70
  4. Step 4: Simplify right side
    324,668.30x = 152,055,167,855.42
  5. Step 5: Solve for x
    x = 152,055,167,855.42/324,668.30
  6. Step 6: Final answer
    x = 468,340.05

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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.