Home / 224,403.06-309,703.61-128,909.52

Finding the Fourth Proportional to 224,403.06, 309,703.61 and 128,909.52

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Solution

The fourth proportional to 224,403.06, 309,703.61 and 128,909.52 is: 177,910.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,403.06 : 309,703.61 = 128,909.52 : x
  2. Step 2: Convert to fraction form
    224,403.06/309,703.61 = 128,909.52/x
  3. Step 3: Cross multiply
    224,403.06x = 309,703.61 × 128,909.52
  4. Step 4: Simplify right side
    224,403.06x = 39,923,743,062.82
  5. Step 5: Solve for x
    x = 39,923,743,062.82/224,403.06
  6. Step 6: Final answer
    x = 177,910.87

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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.