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Finding the Fourth Proportional to 218,789.76, 301,930.12 and 118,187.76

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Solution

The fourth proportional to 218,789.76, 301,930.12 and 118,187.76 is: 163,099.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,789.76 : 301,930.12 = 118,187.76 : x
  2. Step 2: Convert to fraction form
    218,789.76/301,930.12 = 118,187.76/x
  3. Step 3: Cross multiply
    218,789.76x = 301,930.12 × 118,187.76
  4. Step 4: Simplify right side
    218,789.76x = 35,684,444,559.33
  5. Step 5: Solve for x
    x = 35,684,444,559.33/218,789.76
  6. Step 6: Final answer
    x = 163,099.24

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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.