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Finding the Fourth Proportional to 518,167.91, 777,688.58 and 218,863.29

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Solution

The fourth proportional to 518,167.91, 777,688.58 and 218,863.29 is: 328,479.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,167.91 : 777,688.58 = 218,863.29 : x
  2. Step 2: Convert to fraction form
    518,167.91/777,688.58 = 218,863.29/x
  3. Step 3: Cross multiply
    518,167.91x = 777,688.58 × 218,863.29
  4. Step 4: Simplify right side
    518,167.91x = 170,207,482,182.69
  5. Step 5: Solve for x
    x = 170,207,482,182.69/518,167.91
  6. Step 6: Final answer
    x = 328,479.40

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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.