Home / 278,277.20-384,022.65-157,415.94

Finding the Fourth Proportional to 278,277.20, 384,022.65 and 157,415.94

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Solution

The fourth proportional to 278,277.20, 384,022.65 and 157,415.94 is: 217,234.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,277.20 : 384,022.65 = 157,415.94 : x
  2. Step 2: Convert to fraction form
    278,277.20/384,022.65 = 157,415.94/x
  3. Step 3: Cross multiply
    278,277.20x = 384,022.65 × 157,415.94
  4. Step 4: Simplify right side
    278,277.20x = 60,451,286,431.04
  5. Step 5: Solve for x
    x = 60,451,286,431.04/278,277.20
  6. Step 6: Final answer
    x = 217,234.07

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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.