Home / 278,771.28-384,689.76-151,446.48

Finding the Fourth Proportional to 278,771.28, 384,689.76 and 151,446.48

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Solution

The fourth proportional to 278,771.28, 384,689.76 and 151,446.48 is: 208,988.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,771.28 : 384,689.76 = 151,446.48 : x
  2. Step 2: Convert to fraction form
    278,771.28/384,689.76 = 151,446.48/x
  3. Step 3: Cross multiply
    278,771.28x = 384,689.76 × 151,446.48
  4. Step 4: Simplify right side
    278,771.28x = 58,259,910,044.04
  5. Step 5: Solve for x
    x = 58,259,910,044.04/278,771.28
  6. Step 6: Final answer
    x = 208,988.21

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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.