Home / 278,990.20-385,001.94-151,669

Finding the Fourth Proportional to 278,990.20, 385,001.94 and 151,669

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Solution

The fourth proportional to 278,990.20, 385,001.94 and 151,669 is: 209,300.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,990.20 : 385,001.94 = 151,669 : x
  2. Step 2: Convert to fraction form
    278,990.20/385,001.94 = 151,669/x
  3. Step 3: Cross multiply
    278,990.20x = 385,001.94 × 151,669
  4. Step 4: Simplify right side
    278,990.20x = 58,392,859,237.86
  5. Step 5: Solve for x
    x = 58,392,859,237.86/278,990.20
  6. Step 6: Final answer
    x = 209,300.75

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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.