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Finding the Fourth Proportional to 518,377.22, 715,273.83 and 288,884.24

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Solution

The fourth proportional to 518,377.22, 715,273.83 and 288,884.24 is: 398,611.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,377.22 : 715,273.83 = 288,884.24 : x
  2. Step 2: Convert to fraction form
    518,377.22/715,273.83 = 288,884.24/x
  3. Step 3: Cross multiply
    518,377.22x = 715,273.83 × 288,884.24
  4. Step 4: Simplify right side
    518,377.22x = 206,631,336,771.44
  5. Step 5: Solve for x
    x = 206,631,336,771.44/518,377.22
  6. Step 6: Final answer
    x = 398,611.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.