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Finding the Fourth Proportional to 397,209, 548,616.42 and 262,839.72

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Solution

The fourth proportional to 397,209, 548,616.42 and 262,839.72 is: 363,028.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,209 : 548,616.42 = 262,839.72 : x
  2. Step 2: Convert to fraction form
    397,209/548,616.42 = 262,839.72/x
  3. Step 3: Cross multiply
    397,209x = 548,616.42 × 262,839.72
  4. Step 4: Simplify right side
    397,209x = 144,198,186,220.20
  5. Step 5: Solve for x
    x = 144,198,186,220.20/397,209
  6. Step 6: Final answer
    x = 363,028.50

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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.