Home / 313,266.72-431,981.19-185,917.71

Finding the Fourth Proportional to 313,266.72, 431,981.19 and 185,917.71

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Solution

The fourth proportional to 313,266.72, 431,981.19 and 185,917.71 is: 256,372.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,266.72 : 431,981.19 = 185,917.71 : x
  2. Step 2: Convert to fraction form
    313,266.72/431,981.19 = 185,917.71/x
  3. Step 3: Cross multiply
    313,266.72x = 431,981.19 × 185,917.71
  4. Step 4: Simplify right side
    313,266.72x = 80,312,953,607.87
  5. Step 5: Solve for x
    x = 80,312,953,607.87/313,266.72
  6. Step 6: Final answer
    x = 256,372.44

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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.