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Finding the Fourth Proportional to 461,143.84, 636,270.15 and 279,851.68

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Solution

The fourth proportional to 461,143.84, 636,270.15 and 279,851.68 is: 386,129.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,143.84 : 636,270.15 = 279,851.68 : x
  2. Step 2: Convert to fraction form
    461,143.84/636,270.15 = 279,851.68/x
  3. Step 3: Cross multiply
    461,143.84x = 636,270.15 × 279,851.68
  4. Step 4: Simplify right side
    461,143.84x = 178,061,270,411.35
  5. Step 5: Solve for x
    x = 178,061,270,411.35/461,143.84
  6. Step 6: Final answer
    x = 386,129.57

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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.