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Finding the Fourth Proportional to 499,344.75, 689,098.19 and 272,990.25

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Solution

The fourth proportional to 499,344.75, 689,098.19 and 272,990.25 is: 376,727.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,344.75 : 689,098.19 = 272,990.25 : x
  2. Step 2: Convert to fraction form
    499,344.75/689,098.19 = 272,990.25/x
  3. Step 3: Cross multiply
    499,344.75x = 689,098.19 × 272,990.25
  4. Step 4: Simplify right side
    499,344.75x = 188,117,085,797.70
  5. Step 5: Solve for x
    x = 188,117,085,797.70/499,344.75
  6. Step 6: Final answer
    x = 376,727.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.