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Finding the Fourth Proportional to 485,071.02, 669,418.17 and 270,211.02

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Solution

The fourth proportional to 485,071.02, 669,418.17 and 270,211.02 is: 372,902.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,071.02 : 669,418.17 = 270,211.02 : x
  2. Step 2: Convert to fraction form
    485,071.02/669,418.17 = 270,211.02/x
  3. Step 3: Cross multiply
    485,071.02x = 669,418.17 × 270,211.02
  4. Step 4: Simplify right side
    485,071.02x = 180,884,166,522.23
  5. Step 5: Solve for x
    x = 180,884,166,522.23/485,071.02
  6. Step 6: Final answer
    x = 372,902.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.