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Finding the Fourth Proportional to 518,934.37, 778,434.36 and 219,375.52

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Solution

The fourth proportional to 518,934.37, 778,434.36 and 219,375.52 is: 329,077.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,934.37 : 778,434.36 = 219,375.52 : x
  2. Step 2: Convert to fraction form
    518,934.37/778,434.36 = 219,375.52/x
  3. Step 3: Cross multiply
    518,934.37x = 778,434.36 × 219,375.52
  4. Step 4: Simplify right side
    518,934.37x = 170,769,442,510.87
  5. Step 5: Solve for x
    x = 170,769,442,510.87/518,934.37
  6. Step 6: Final answer
    x = 329,077.15

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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.