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Finding the Fourth Proportional to 228,719.26, 315,603.03 and 128,117.26

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Solution

The fourth proportional to 228,719.26, 315,603.03 and 128,117.26 is: 176,785.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,719.26 : 315,603.03 = 128,117.26 : x
  2. Step 2: Convert to fraction form
    228,719.26/315,603.03 = 128,117.26/x
  3. Step 3: Cross multiply
    228,719.26x = 315,603.03 × 128,117.26
  4. Step 4: Simplify right side
    228,719.26x = 40,434,195,451.30
  5. Step 5: Solve for x
    x = 40,434,195,451.30/228,719.26
  6. Step 6: Final answer
    x = 176,785.27

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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.