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Finding the Fourth Proportional to 615,807.20, 923,581.20 and 260,832.80

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Solution

The fourth proportional to 615,807.20, 923,581.20 and 260,832.80 is: 391,194.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,807.20 : 923,581.20 = 260,832.80 : x
  2. Step 2: Convert to fraction form
    615,807.20/923,581.20 = 260,832.80/x
  3. Step 3: Cross multiply
    615,807.20x = 923,581.20 × 260,832.80
  4. Step 4: Simplify right side
    615,807.20x = 240,900,270,423.36
  5. Step 5: Solve for x
    x = 240,900,270,423.36/615,807.20
  6. Step 6: Final answer
    x = 391,194.31

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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.