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Finding the Fourth Proportional to 615,697.20, 923,643 and 260,713.44

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Solution

The fourth proportional to 615,697.20, 923,643 and 260,713.44 is: 391,111.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,697.20 : 923,643 = 260,713.44 : x
  2. Step 2: Convert to fraction form
    615,697.20/923,643 = 260,713.44/x
  3. Step 3: Cross multiply
    615,697.20x = 923,643 × 260,713.44
  4. Step 4: Simplify right side
    615,697.20x = 240,806,143,861.92
  5. Step 5: Solve for x
    x = 240,806,143,861.92/615,697.20
  6. Step 6: Final answer
    x = 391,111.32

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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.