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Finding the Fourth Proportional to 615,895.20, 923,713.20 and 260,920.80

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Solution

The fourth proportional to 615,895.20, 923,713.20 and 260,920.80 is: 391,326.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,895.20 : 923,713.20 = 260,920.80 : x
  2. Step 2: Convert to fraction form
    615,895.20/923,713.20 = 260,920.80/x
  3. Step 3: Cross multiply
    615,895.20x = 923,713.20 × 260,920.80
  4. Step 4: Simplify right side
    615,895.20x = 241,015,987,114.56
  5. Step 5: Solve for x
    x = 241,015,987,114.56/615,895.20
  6. Step 6: Final answer
    x = 391,326.30

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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.