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Finding the Fourth Proportional to 499,366.80, 749,050.20 and 199,990.80

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Solution

The fourth proportional to 499,366.80, 749,050.20 and 199,990.80 is: 299,986.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,366.80 : 749,050.20 = 199,990.80 : x
  2. Step 2: Convert to fraction form
    499,366.80/749,050.20 = 199,990.80/x
  3. Step 3: Cross multiply
    499,366.80x = 749,050.20 × 199,990.80
  4. Step 4: Simplify right side
    499,366.80x = 149,803,148,738.16
  5. Step 5: Solve for x
    x = 149,803,148,738.16/499,366.80
  6. Step 6: Final answer
    x = 299,986.20

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Similar ratio
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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.