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Finding the Fourth Proportional to 518,124.11, 777,290.94 and 218,605.43

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Solution

The fourth proportional to 518,124.11, 777,290.94 and 218,605.43 is: 327,952.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,124.11 : 777,290.94 = 218,605.43 : x
  2. Step 2: Convert to fraction form
    518,124.11/777,290.94 = 218,605.43/x
  3. Step 3: Cross multiply
    518,124.11x = 777,290.94 × 218,605.43
  4. Step 4: Simplify right side
    518,124.11x = 169,920,019,080.78
  5. Step 5: Solve for x
    x = 169,920,019,080.78/518,124.11
  6. Step 6: Final answer
    x = 327,952.35

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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.