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Finding the Fourth Proportional to 218,779, 301,915.14 and 118,177

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Solution

The fourth proportional to 218,779, 301,915.14 and 118,177 is: 163,084.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,779 : 301,915.14 = 118,177 : x
  2. Step 2: Convert to fraction form
    218,779/301,915.14 = 118,177/x
  3. Step 3: Cross multiply
    218,779x = 301,915.14 × 118,177
  4. Step 4: Simplify right side
    218,779x = 35,679,425,499.78
  5. Step 5: Solve for x
    x = 35,679,425,499.78/218,779
  6. Step 6: Final answer
    x = 163,084.32

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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.