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Finding the Fourth Proportional to 371,990.43, 513,350.46 and 202,228.20

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Solution

The fourth proportional to 371,990.43, 513,350.46 and 202,228.20 is: 279,076.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,990.43 : 513,350.46 = 202,228.20 : x
  2. Step 2: Convert to fraction form
    371,990.43/513,350.46 = 202,228.20/x
  3. Step 3: Cross multiply
    371,990.43x = 513,350.46 × 202,228.20
  4. Step 4: Simplify right side
    371,990.43x = 103,813,939,494.97
  5. Step 5: Solve for x
    x = 103,813,939,494.97/371,990.43
  6. Step 6: Final answer
    x = 279,076.91

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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.