Home / 312,868.39-431,766.89-176,922.68

Finding the Fourth Proportional to 312,868.39, 431,766.89 and 176,922.68

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Solution

The fourth proportional to 312,868.39, 431,766.89 and 176,922.68 is: 244,158.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,868.39 : 431,766.89 = 176,922.68 : x
  2. Step 2: Convert to fraction form
    312,868.39/431,766.89 = 176,922.68/x
  3. Step 3: Cross multiply
    312,868.39x = 431,766.89 × 176,922.68
  4. Step 4: Simplify right side
    312,868.39x = 76,389,355,314.07
  5. Step 5: Solve for x
    x = 76,389,355,314.07/312,868.39
  6. Step 6: Final answer
    x = 244,158.11

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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.