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Finding the Fourth Proportional to 279,363.69, 385,514.50 and 152,036.55

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Solution

The fourth proportional to 279,363.69, 385,514.50 and 152,036.55 is: 209,806.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,363.69 : 385,514.50 = 152,036.55 : x
  2. Step 2: Convert to fraction form
    279,363.69/385,514.50 = 152,036.55/x
  3. Step 3: Cross multiply
    279,363.69x = 385,514.50 × 152,036.55
  4. Step 4: Simplify right side
    279,363.69x = 58,612,294,554.98
  5. Step 5: Solve for x
    x = 58,612,294,554.98/279,363.69
  6. Step 6: Final answer
    x = 209,806.42

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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.