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Finding the Fourth Proportional to 518,445.50, 777,974.44 and 218,906.70

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Solution

The fourth proportional to 518,445.50, 777,974.44 and 218,906.70 is: 328,489.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,445.50 : 777,974.44 = 218,906.70 : x
  2. Step 2: Convert to fraction form
    518,445.50/777,974.44 = 218,906.70/x
  3. Step 3: Cross multiply
    518,445.50x = 777,974.44 × 218,906.70
  4. Step 4: Simplify right side
    518,445.50x = 170,303,817,344.75
  5. Step 5: Solve for x
    x = 170,303,817,344.75/518,445.50
  6. Step 6: Final answer
    x = 328,489.33

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1.5x scale

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.