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Finding the Fourth Proportional to 201,768.66, 278,436.69 and 126,358.74

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Solution

The fourth proportional to 201,768.66, 278,436.69 and 126,358.74 is: 174,372.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,768.66 : 278,436.69 = 126,358.74 : x
  2. Step 2: Convert to fraction form
    201,768.66/278,436.69 = 126,358.74/x
  3. Step 3: Cross multiply
    201,768.66x = 278,436.69 × 126,358.74
  4. Step 4: Simplify right side
    201,768.66x = 35,182,909,318.17
  5. Step 5: Solve for x
    x = 35,182,909,318.17/201,768.66
  6. Step 6: Final answer
    x = 174,372.52

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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.