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Finding the Fourth Proportional to 555,280.80, 832,921.20 and 255,760.80

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Solution

The fourth proportional to 555,280.80, 832,921.20 and 255,760.80 is: 383,641.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,280.80 : 832,921.20 = 255,760.80 : x
  2. Step 2: Convert to fraction form
    555,280.80/832,921.20 = 255,760.80/x
  3. Step 3: Cross multiply
    555,280.80x = 832,921.20 × 255,760.80
  4. Step 4: Simplify right side
    555,280.80x = 213,028,592,448.96
  5. Step 5: Solve for x
    x = 213,028,592,448.96/555,280.80
  6. Step 6: Final answer
    x = 383,641.20

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Similar ratio
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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.