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Finding the Fourth Proportional to 323,430.48, 485,296.38 and 123,685.08

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Solution

The fourth proportional to 323,430.48, 485,296.38 and 123,685.08 is: 185,585.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,430.48 : 485,296.38 = 123,685.08 : x
  2. Step 2: Convert to fraction form
    323,430.48/485,296.38 = 123,685.08/x
  3. Step 3: Cross multiply
    323,430.48x = 485,296.38 × 123,685.08
  4. Step 4: Simplify right side
    323,430.48x = 60,023,921,584.01
  5. Step 5: Solve for x
    x = 60,023,921,584.01/323,430.48
  6. Step 6: Final answer
    x = 185,585.23

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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.