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Finding the Fourth Proportional to 218,719.87, 301,833.43 and 118,117.87

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Solution

The fourth proportional to 218,719.87, 301,833.43 and 118,117.87 is: 163,002.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,719.87 : 301,833.43 = 118,117.87 : x
  2. Step 2: Convert to fraction form
    218,719.87/301,833.43 = 118,117.87/x
  3. Step 3: Cross multiply
    218,719.87x = 301,833.43 × 118,117.87
  4. Step 4: Simplify right side
    218,719.87x = 35,651,921,091.81
  5. Step 5: Solve for x
    x = 35,651,921,091.81/218,719.87
  6. Step 6: Final answer
    x = 163,002.66

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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.