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Finding the Fourth Proportional to 231,735.90, 347,603.85 and 91,476.30

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Solution

The fourth proportional to 231,735.90, 347,603.85 and 91,476.30 is: 137,214.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,735.90 : 347,603.85 = 91,476.30 : x
  2. Step 2: Convert to fraction form
    231,735.90/347,603.85 = 91,476.30/x
  3. Step 3: Cross multiply
    231,735.90x = 347,603.85 × 91,476.30
  4. Step 4: Simplify right side
    231,735.90x = 31,797,514,063.76
  5. Step 5: Solve for x
    x = 31,797,514,063.76/231,735.90
  6. Step 6: Final answer
    x = 137,214.45

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1.5x scale

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.