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Finding the Fourth Proportional to 886,925.20, 1,330,387.80 and 255,859.60

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Solution

The fourth proportional to 886,925.20, 1,330,387.80 and 255,859.60 is: 383,789.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,925.20 : 1,330,387.80 = 255,859.60 : x
  2. Step 2: Convert to fraction form
    886,925.20/1,330,387.80 = 255,859.60/x
  3. Step 3: Cross multiply
    886,925.20x = 1,330,387.80 × 255,859.60
  4. Step 4: Simplify right side
    886,925.20x = 340,392,490,352.88
  5. Step 5: Solve for x
    x = 340,392,490,352.88/886,925.20
  6. Step 6: Final answer
    x = 383,789.40

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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.