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Finding the Fourth Proportional to 235,290.93, 352,780.36 and 85,513.42

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Solution

The fourth proportional to 235,290.93, 352,780.36 and 85,513.42 is: 128,213.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,290.93 : 352,780.36 = 85,513.42 : x
  2. Step 2: Convert to fraction form
    235,290.93/352,780.36 = 85,513.42/x
  3. Step 3: Cross multiply
    235,290.93x = 352,780.36 × 85,513.42
  4. Step 4: Simplify right side
    235,290.93x = 30,167,455,800.64
  5. Step 5: Solve for x
    x = 30,167,455,800.64/235,290.93
  6. Step 6: Final answer
    x = 128,213.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.