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Finding the Fourth Proportional to 519,730, 717,229.32 and 281,266

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Solution

The fourth proportional to 519,730, 717,229.32 and 281,266 is: 388,148.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,730 : 717,229.32 = 281,266 : x
  2. Step 2: Convert to fraction form
    519,730/717,229.32 = 281,266/x
  3. Step 3: Cross multiply
    519,730x = 717,229.32 × 281,266
  4. Step 4: Simplify right side
    519,730x = 201,732,221,919.12
  5. Step 5: Solve for x
    x = 201,732,221,919.12/519,730
  6. Step 6: Final answer
    x = 388,148.12

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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.