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Finding the Fourth Proportional to 272,196.66, 408,302.28 and 103,695.60

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Solution

The fourth proportional to 272,196.66, 408,302.28 and 103,695.60 is: 155,546.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,196.66 : 408,302.28 = 103,695.60 : x
  2. Step 2: Convert to fraction form
    272,196.66/408,302.28 = 103,695.60/x
  3. Step 3: Cross multiply
    272,196.66x = 408,302.28 × 103,695.60
  4. Step 4: Simplify right side
    272,196.66x = 42,339,149,905.97
  5. Step 5: Solve for x
    x = 42,339,149,905.97/272,196.66
  6. Step 6: Final answer
    x = 155,546.18

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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.