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Finding the Fourth Proportional to 518,976.80, 778,902.60 and 235,104.20

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Solution

The fourth proportional to 518,976.80, 778,902.60 and 235,104.20 is: 352,854.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,976.80 : 778,902.60 = 235,104.20 : x
  2. Step 2: Convert to fraction form
    518,976.80/778,902.60 = 235,104.20/x
  3. Step 3: Cross multiply
    518,976.80x = 778,902.60 × 235,104.20
  4. Step 4: Simplify right side
    518,976.80x = 183,123,272,650.92
  5. Step 5: Solve for x
    x = 183,123,272,650.92/518,976.80
  6. Step 6: Final answer
    x = 352,854.45

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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.