Home / 228,761.24-315,690.30-128,159.96

Finding the Fourth Proportional to 228,761.24, 315,690.30 and 128,159.96

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Solution

The fourth proportional to 228,761.24, 315,690.30 and 128,159.96 is: 176,860.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,761.24 : 315,690.30 = 128,159.96 : x
  2. Step 2: Convert to fraction form
    228,761.24/315,690.30 = 128,159.96/x
  3. Step 3: Cross multiply
    228,761.24x = 315,690.30 × 128,159.96
  4. Step 4: Simplify right side
    228,761.24x = 40,458,856,220.39
  5. Step 5: Solve for x
    x = 40,458,856,220.39/228,761.24
  6. Step 6: Final answer
    x = 176,860.63

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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.