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Finding the Fourth Proportional to 324,008.10, 486,012.15 and 315,260.10

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Solution

The fourth proportional to 324,008.10, 486,012.15 and 315,260.10 is: 472,890.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,008.10 : 486,012.15 = 315,260.10 : x
  2. Step 2: Convert to fraction form
    324,008.10/486,012.15 = 315,260.10/x
  3. Step 3: Cross multiply
    324,008.10x = 486,012.15 × 315,260.10
  4. Step 4: Simplify right side
    324,008.10x = 153,220,239,010.22
  5. Step 5: Solve for x
    x = 153,220,239,010.22/324,008.10
  6. Step 6: Final answer
    x = 472,890.15

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Similar ratio
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1.5x scale

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.