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Finding the Fourth Proportional to 324,858.17, 486,530.30 and 315,889.85

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Solution

The fourth proportional to 324,858.17, 486,530.30 and 315,889.85 is: 473,098.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,858.17 : 486,530.30 = 315,889.85 : x
  2. Step 2: Convert to fraction form
    324,858.17/486,530.30 = 315,889.85/x
  3. Step 3: Cross multiply
    324,858.17x = 486,530.30 × 315,889.85
  4. Step 4: Simplify right side
    324,858.17x = 153,689,981,844.53
  5. Step 5: Solve for x
    x = 153,689,981,844.53/324,858.17
  6. Step 6: Final answer
    x = 473,098.72

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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.