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Finding the Fourth Proportional to 424,281, 636,001.11 and 199,238.59

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Solution

The fourth proportional to 424,281, 636,001.11 and 199,238.59 is: 298,660.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,281 : 636,001.11 = 199,238.59 : x
  2. Step 2: Convert to fraction form
    424,281/636,001.11 = 199,238.59/x
  3. Step 3: Cross multiply
    424,281x = 636,001.11 × 199,238.59
  4. Step 4: Simplify right side
    424,281x = 126,715,964,394.84
  5. Step 5: Solve for x
    x = 126,715,964,394.84/424,281
  6. Step 6: Final answer
    x = 298,660.47

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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.