Home / 312,777.28-431,622.12-185,377.24

Finding the Fourth Proportional to 312,777.28, 431,622.12 and 185,377.24

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Solution

The fourth proportional to 312,777.28, 431,622.12 and 185,377.24 is: 255,814.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,777.28 : 431,622.12 = 185,377.24 : x
  2. Step 2: Convert to fraction form
    312,777.28/431,622.12 = 185,377.24/x
  3. Step 3: Cross multiply
    312,777.28x = 431,622.12 × 185,377.24
  4. Step 4: Simplify right side
    312,777.28x = 80,012,917,328.55
  5. Step 5: Solve for x
    x = 80,012,917,328.55/312,777.28
  6. Step 6: Final answer
    x = 255,814.35

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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.