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Finding the Fourth Proportional to 218,717.64, 301,830.33 and 118,115.64

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Solution

The fourth proportional to 218,717.64, 301,830.33 and 118,115.64 is: 162,999.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,717.64 : 301,830.33 = 118,115.64 : x
  2. Step 2: Convert to fraction form
    218,717.64/301,830.33 = 118,115.64/x
  3. Step 3: Cross multiply
    218,717.64x = 301,830.33 × 118,115.64
  4. Step 4: Simplify right side
    218,717.64x = 35,650,882,599.36
  5. Step 5: Solve for x
    x = 35,650,882,599.36/218,717.64
  6. Step 6: Final answer
    x = 162,999.58

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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.