Home / 278,770.20-384,700.75-151,446.70

Finding the Fourth Proportional to 278,770.20, 384,700.75 and 151,446.70

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Solution

The fourth proportional to 278,770.20, 384,700.75 and 151,446.70 is: 208,995.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,770.20 : 384,700.75 = 151,446.70 : x
  2. Step 2: Convert to fraction form
    278,770.20/384,700.75 = 151,446.70/x
  3. Step 3: Cross multiply
    278,770.20x = 384,700.75 × 151,446.70
  4. Step 4: Simplify right side
    278,770.20x = 58,261,659,075.03
  5. Step 5: Solve for x
    x = 58,261,659,075.03/278,770.20
  6. Step 6: Final answer
    x = 208,995.29

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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.