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Finding the Fourth Proportional to 404,220.80, 606,331.20 and 119,921.60

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Solution

The fourth proportional to 404,220.80, 606,331.20 and 119,921.60 is: 179,882.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,220.80 : 606,331.20 = 119,921.60 : x
  2. Step 2: Convert to fraction form
    404,220.80/606,331.20 = 119,921.60/x
  3. Step 3: Cross multiply
    404,220.80x = 606,331.20 × 119,921.60
  4. Step 4: Simplify right side
    404,220.80x = 72,712,207,633.92
  5. Step 5: Solve for x
    x = 72,712,207,633.92/404,220.80
  6. Step 6: Final answer
    x = 179,882.40

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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.