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Finding the Fourth Proportional to 518,248.78, 777,335.67 and 163,364.38

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Solution

The fourth proportional to 518,248.78, 777,335.67 and 163,364.38 is: 245,034.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,248.78 : 777,335.67 = 163,364.38 : x
  2. Step 2: Convert to fraction form
    518,248.78/777,335.67 = 163,364.38/x
  3. Step 3: Cross multiply
    518,248.78x = 777,335.67 × 163,364.38
  4. Step 4: Simplify right side
    518,248.78x = 126,988,959,781.44
  5. Step 5: Solve for x
    x = 126,988,959,781.44/518,248.78
  6. Step 6: Final answer
    x = 245,034.75

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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.