Home / 278,769.20-384,699.38-151,445.70

Finding the Fourth Proportional to 278,769.20, 384,699.38 and 151,445.70

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Solution

The fourth proportional to 278,769.20, 384,699.38 and 151,445.70 is: 208,993.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,769.20 : 384,699.38 = 151,445.70 : x
  2. Step 2: Convert to fraction form
    278,769.20/384,699.38 = 151,445.70/x
  3. Step 3: Cross multiply
    278,769.20x = 384,699.38 × 151,445.70
  4. Step 4: Simplify right side
    278,769.20x = 58,261,066,136.44
  5. Step 5: Solve for x
    x = 58,261,066,136.44/278,769.20
  6. Step 6: Final answer
    x = 208,993.92

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1.5x scale

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.