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Finding the Fourth Proportional to 500,299.43, 750,446.60 and 121,220.24

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Solution

The fourth proportional to 500,299.43, 750,446.60 and 121,220.24 is: 181,829.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,299.43 : 750,446.60 = 121,220.24 : x
  2. Step 2: Convert to fraction form
    500,299.43/750,446.60 = 121,220.24/x
  3. Step 3: Cross multiply
    500,299.43x = 750,446.60 × 121,220.24
  4. Step 4: Simplify right side
    500,299.43x = 90,969,312,600.85
  5. Step 5: Solve for x
    x = 90,969,312,600.85/500,299.43
  6. Step 6: Final answer
    x = 181,829.74

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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.