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Finding the Fourth Proportional to 225,925.50, 311,791.78 and 125,323.50

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Solution

The fourth proportional to 225,925.50, 311,791.78 and 125,323.50 is: 172,954.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,925.50 : 311,791.78 = 125,323.50 : x
  2. Step 2: Convert to fraction form
    225,925.50/311,791.78 = 125,323.50/x
  3. Step 3: Cross multiply
    225,925.50x = 311,791.78 × 125,323.50
  4. Step 4: Simplify right side
    225,925.50x = 39,074,837,140.83
  5. Step 5: Solve for x
    x = 39,074,837,140.83/225,925.50
  6. Step 6: Final answer
    x = 172,954.52

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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.