Home / 278,989.20-385,000.56-151,668

Finding the Fourth Proportional to 278,989.20, 385,000.56 and 151,668

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Solution

The fourth proportional to 278,989.20, 385,000.56 and 151,668 is: 209,299.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,989.20 : 385,000.56 = 151,668 : x
  2. Step 2: Convert to fraction form
    278,989.20/385,000.56 = 151,668/x
  3. Step 3: Cross multiply
    278,989.20x = 385,000.56 × 151,668
  4. Step 4: Simplify right side
    278,989.20x = 58,392,264,934.08
  5. Step 5: Solve for x
    x = 58,392,264,934.08/278,989.20
  6. Step 6: Final answer
    x = 209,299.37

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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.