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Finding the Fourth Proportional to 518,766.80, 777,718.20 and 219,477.20

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Solution

The fourth proportional to 518,766.80, 777,718.20 and 219,477.20 is: 329,033.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,766.80 : 777,718.20 = 219,477.20 : x
  2. Step 2: Convert to fraction form
    518,766.80/777,718.20 = 219,477.20/x
  3. Step 3: Cross multiply
    518,766.80x = 777,718.20 × 219,477.20
  4. Step 4: Simplify right side
    518,766.80x = 170,691,412,925.04
  5. Step 5: Solve for x
    x = 170,691,412,925.04/518,766.80
  6. Step 6: Final answer
    x = 329,033.03

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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.