Home / 228,789.24-315,728.94-128,187.96

Finding the Fourth Proportional to 228,789.24, 315,728.94 and 128,187.96

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Solution

The fourth proportional to 228,789.24, 315,728.94 and 128,187.96 is: 176,899.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,789.24 : 315,728.94 = 128,187.96 : x
  2. Step 2: Convert to fraction form
    228,789.24/315,728.94 = 128,187.96/x
  3. Step 3: Cross multiply
    228,789.24x = 315,728.94 × 128,187.96
  4. Step 4: Simplify right side
    228,789.24x = 40,472,648,731.56
  5. Step 5: Solve for x
    x = 40,472,648,731.56/228,789.24
  6. Step 6: Final answer
    x = 176,899.27

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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.