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Finding the Fourth Proportional to 234,138.63, 323,111.28 and 126,708.67

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Solution

The fourth proportional to 234,138.63, 323,111.28 and 126,708.67 is: 174,857.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,138.63 : 323,111.28 = 126,708.67 : x
  2. Step 2: Convert to fraction form
    234,138.63/323,111.28 = 126,708.67/x
  3. Step 3: Cross multiply
    234,138.63x = 323,111.28 × 126,708.67
  4. Step 4: Simplify right side
    234,138.63x = 40,941,000,550.80
  5. Step 5: Solve for x
    x = 40,941,000,550.80/234,138.63
  6. Step 6: Final answer
    x = 174,857.95

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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.