Home / 278,929.52-384,930.85-158,066.78

Finding the Fourth Proportional to 278,929.52, 384,930.85 and 158,066.78

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Solution

The fourth proportional to 278,929.52, 384,930.85 and 158,066.78 is: 218,136.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,929.52 : 384,930.85 = 158,066.78 : x
  2. Step 2: Convert to fraction form
    278,929.52/384,930.85 = 158,066.78/x
  3. Step 3: Cross multiply
    278,929.52x = 384,930.85 × 158,066.78
  4. Step 4: Simplify right side
    278,929.52x = 60,844,779,191.83
  5. Step 5: Solve for x
    x = 60,844,779,191.83/278,929.52
  6. Step 6: Final answer
    x = 218,136.75

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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.