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Finding the Fourth Proportional to 269,277.20, 403,915.80 and 91,984.40

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Solution

The fourth proportional to 269,277.20, 403,915.80 and 91,984.40 is: 137,976.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,277.20 : 403,915.80 = 91,984.40 : x
  2. Step 2: Convert to fraction form
    269,277.20/403,915.80 = 91,984.40/x
  3. Step 3: Cross multiply
    269,277.20x = 403,915.80 × 91,984.40
  4. Step 4: Simplify right side
    269,277.20x = 37,153,952,513.52
  5. Step 5: Solve for x
    x = 37,153,952,513.52/269,277.20
  6. Step 6: Final answer
    x = 137,976.60

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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.