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Finding the Fourth Proportional to 323,167.20, 485,139.60 and 320,834.40

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Solution

The fourth proportional to 323,167.20, 485,139.60 and 320,834.40 is: 481,637.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,167.20 : 485,139.60 = 320,834.40 : x
  2. Step 2: Convert to fraction form
    323,167.20/485,139.60 = 320,834.40/x
  3. Step 3: Cross multiply
    323,167.20x = 485,139.60 × 320,834.40
  4. Step 4: Simplify right side
    323,167.20x = 155,649,472,482.24
  5. Step 5: Solve for x
    x = 155,649,472,482.24/323,167.20
  6. Step 6: Final answer
    x = 481,637.59

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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.