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Finding the Fourth Proportional to 261,400.60, 392,100.90 and 202,278.70

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Solution

The fourth proportional to 261,400.60, 392,100.90 and 202,278.70 is: 303,418.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,400.60 : 392,100.90 = 202,278.70 : x
  2. Step 2: Convert to fraction form
    261,400.60/392,100.90 = 202,278.70/x
  3. Step 3: Cross multiply
    261,400.60x = 392,100.90 × 202,278.70
  4. Step 4: Simplify right side
    261,400.60x = 79,313,660,320.83
  5. Step 5: Solve for x
    x = 79,313,660,320.83/261,400.60
  6. Step 6: Final answer
    x = 303,418.05

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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.