Home / 203,272.74-280,530-112,632.66

Finding the Fourth Proportional to 203,272.74, 280,530 and 112,632.66

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Solution

The fourth proportional to 203,272.74, 280,530 and 112,632.66 is: 155,440.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,272.74 : 280,530 = 112,632.66 : x
  2. Step 2: Convert to fraction form
    203,272.74/280,530 = 112,632.66/x
  3. Step 3: Cross multiply
    203,272.74x = 280,530 × 112,632.66
  4. Step 4: Simplify right side
    203,272.74x = 31,596,840,109.80
  5. Step 5: Solve for x
    x = 31,596,840,109.80/203,272.74
  6. Step 6: Final answer
    x = 155,440.62

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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.