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Finding the Fourth Proportional to 234,210.69, 323,210.79 and 126,781.61

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Solution

The fourth proportional to 234,210.69, 323,210.79 and 126,781.61 is: 174,958.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,210.69 : 323,210.79 = 126,781.61 : x
  2. Step 2: Convert to fraction form
    234,210.69/323,210.79 = 126,781.61/x
  3. Step 3: Cross multiply
    234,210.69x = 323,210.79 × 126,781.61
  4. Step 4: Simplify right side
    234,210.69x = 40,977,182,709.52
  5. Step 5: Solve for x
    x = 40,977,182,709.52/234,210.69
  6. Step 6: Final answer
    x = 174,958.64

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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.