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Finding the Fourth Proportional to 235,704.47, 325,307.21 and 138,877.43

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Solution

The fourth proportional to 235,704.47, 325,307.21 and 138,877.43 is: 191,671.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,704.47 : 325,307.21 = 138,877.43 : x
  2. Step 2: Convert to fraction form
    235,704.47/325,307.21 = 138,877.43/x
  3. Step 3: Cross multiply
    235,704.47x = 325,307.21 × 138,877.43
  4. Step 4: Simplify right side
    235,704.47x = 45,177,826,964.35
  5. Step 5: Solve for x
    x = 45,177,826,964.35/235,704.47
  6. Step 6: Final answer
    x = 191,671.49

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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.