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Finding the Fourth Proportional to 272,047.40, 408,071.10 and 231,806.60

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Solution

The fourth proportional to 272,047.40, 408,071.10 and 231,806.60 is: 347,709.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,047.40 : 408,071.10 = 231,806.60 : x
  2. Step 2: Convert to fraction form
    272,047.40/408,071.10 = 231,806.60/x
  3. Step 3: Cross multiply
    272,047.40x = 408,071.10 × 231,806.60
  4. Step 4: Simplify right side
    272,047.40x = 94,593,574,249.26
  5. Step 5: Solve for x
    x = 94,593,574,249.26/272,047.40
  6. Step 6: Final answer
    x = 347,709.90

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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.