Home / 279,394.50-385,566-152,069.78

Finding the Fourth Proportional to 279,394.50, 385,566 and 152,069.78

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Solution

The fourth proportional to 279,394.50, 385,566 and 152,069.78 is: 209,857.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,394.50 : 385,566 = 152,069.78 : x
  2. Step 2: Convert to fraction form
    279,394.50/385,566 = 152,069.78/x
  3. Step 3: Cross multiply
    279,394.50x = 385,566 × 152,069.78
  4. Step 4: Simplify right side
    279,394.50x = 58,632,936,795.48
  5. Step 5: Solve for x
    x = 58,632,936,795.48/279,394.50
  6. Step 6: Final answer
    x = 209,857.16

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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.