Home / 280,151.12-386,626.81-159,303.65

Finding the Fourth Proportional to 280,151.12, 386,626.81 and 159,303.65

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Solution

The fourth proportional to 280,151.12, 386,626.81 and 159,303.65 is: 219,849.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,151.12 : 386,626.81 = 159,303.65 : x
  2. Step 2: Convert to fraction form
    280,151.12/386,626.81 = 159,303.65/x
  3. Step 3: Cross multiply
    280,151.12x = 386,626.81 × 159,303.65
  4. Step 4: Simplify right side
    280,151.12x = 61,591,062,020.86
  5. Step 5: Solve for x
    x = 61,591,062,020.86/280,151.12
  6. Step 6: Final answer
    x = 219,849.42

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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.