Home / 312,776.28-431,620.74-185,376.24

Finding the Fourth Proportional to 312,776.28, 431,620.74 and 185,376.24

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Solution

The fourth proportional to 312,776.28, 431,620.74 and 185,376.24 is: 255,812.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,776.28 : 431,620.74 = 185,376.24 : x
  2. Step 2: Convert to fraction form
    312,776.28/431,620.74 = 185,376.24/x
  3. Step 3: Cross multiply
    312,776.28x = 431,620.74 × 185,376.24
  4. Step 4: Simplify right side
    312,776.28x = 80,012,229,887.22
  5. Step 5: Solve for x
    x = 80,012,229,887.22/312,776.28
  6. Step 6: Final answer
    x = 255,812.97

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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.