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Finding the Fourth Proportional to 324,387.69, 486,685.62 and 155,920.22

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Solution

The fourth proportional to 324,387.69, 486,685.62 and 155,920.22 is: 233,930.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,387.69 : 486,685.62 = 155,920.22 : x
  2. Step 2: Convert to fraction form
    324,387.69/486,685.62 = 155,920.22/x
  3. Step 3: Cross multiply
    324,387.69x = 486,685.62 × 155,920.22
  4. Step 4: Simplify right side
    324,387.69x = 75,884,126,507.81
  5. Step 5: Solve for x
    x = 75,884,126,507.81/324,387.69
  6. Step 6: Final answer
    x = 233,930.35

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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.