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Finding the Fourth Proportional to 218,628.77, 301,708.33 and 126,765.86

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Solution

The fourth proportional to 218,628.77, 301,708.33 and 126,765.86 is: 174,937.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,628.77 : 301,708.33 = 126,765.86 : x
  2. Step 2: Convert to fraction form
    218,628.77/301,708.33 = 126,765.86/x
  3. Step 3: Cross multiply
    218,628.77x = 301,708.33 × 126,765.86
  4. Step 4: Simplify right side
    218,628.77x = 38,246,314,096.16
  5. Step 5: Solve for x
    x = 38,246,314,096.16/218,628.77
  6. Step 6: Final answer
    x = 174,937.25

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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.