Home / 278,311.13-384,069.50-150,986.69

Finding the Fourth Proportional to 278,311.13, 384,069.50 and 150,986.69

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Solution

The fourth proportional to 278,311.13, 384,069.50 and 150,986.69 is: 208,361.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,311.13 : 384,069.50 = 150,986.69 : x
  2. Step 2: Convert to fraction form
    278,311.13/384,069.50 = 150,986.69/x
  3. Step 3: Cross multiply
    278,311.13x = 384,069.50 × 150,986.69
  4. Step 4: Simplify right side
    278,311.13x = 57,989,381,780.02
  5. Step 5: Solve for x
    x = 57,989,381,780.02/278,311.13
  6. Step 6: Final answer
    x = 208,361.71

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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.