Home / 313,263.72-431,977.05-185,914.71

Finding the Fourth Proportional to 313,263.72, 431,977.05 and 185,914.71

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Solution

The fourth proportional to 313,263.72, 431,977.05 and 185,914.71 is: 256,368.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,263.72 : 431,977.05 = 185,914.71 : x
  2. Step 2: Convert to fraction form
    313,263.72/431,977.05 = 185,914.71/x
  3. Step 3: Cross multiply
    313,263.72x = 431,977.05 × 185,914.71
  4. Step 4: Simplify right side
    313,263.72x = 80,310,887,977.41
  5. Step 5: Solve for x
    x = 80,310,887,977.41/313,263.72
  6. Step 6: Final answer
    x = 256,368.30

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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.