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Finding the Fourth Proportional to 424,888.62, 636,415.50 and 199,911.94

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Solution

The fourth proportional to 424,888.62, 636,415.50 and 199,911.94 is: 299,436.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,888.62 : 636,415.50 = 199,911.94 : x
  2. Step 2: Convert to fraction form
    424,888.62/636,415.50 = 199,911.94/x
  3. Step 3: Cross multiply
    424,888.62x = 636,415.50 × 199,911.94
  4. Step 4: Simplify right side
    424,888.62x = 127,227,057,251.07
  5. Step 5: Solve for x
    x = 127,227,057,251.07/424,888.62
  6. Step 6: Final answer
    x = 299,436.26

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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.