Home / 204,003.40-306,005.10-128,879.95

Finding the Fourth Proportional to 204,003.40, 306,005.10 and 128,879.95

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Solution

The fourth proportional to 204,003.40, 306,005.10 and 128,879.95 is: 193,319.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,003.40 : 306,005.10 = 128,879.95 : x
  2. Step 2: Convert to fraction form
    204,003.40/306,005.10 = 128,879.95/x
  3. Step 3: Cross multiply
    204,003.40x = 306,005.10 × 128,879.95
  4. Step 4: Simplify right side
    204,003.40x = 39,437,921,987.75
  5. Step 5: Solve for x
    x = 39,437,921,987.75/204,003.40
  6. Step 6: Final answer
    x = 193,319.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.