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Finding the Fourth Proportional to 615,863.20, 923,103.60 and 260,816.80

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Solution

The fourth proportional to 615,863.20, 923,103.60 and 260,816.80 is: 390,932.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,863.20 : 923,103.60 = 260,816.80 : x
  2. Step 2: Convert to fraction form
    615,863.20/923,103.60 = 260,816.80/x
  3. Step 3: Cross multiply
    615,863.20x = 923,103.60 × 260,816.80
  4. Step 4: Simplify right side
    615,863.20x = 240,760,927,020.48
  5. Step 5: Solve for x
    x = 240,760,927,020.48/615,863.20
  6. Step 6: Final answer
    x = 390,932.48

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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.