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Finding the Fourth Proportional to 199,431.61, 299,082.49 and 66,276.12

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Solution

The fourth proportional to 199,431.61, 299,082.49 and 66,276.12 is: 99,392.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,431.61 : 299,082.49 = 66,276.12 : x
  2. Step 2: Convert to fraction form
    199,431.61/299,082.49 = 66,276.12/x
  3. Step 3: Cross multiply
    199,431.61x = 299,082.49 × 66,276.12
  4. Step 4: Simplify right side
    199,431.61x = 19,822,026,997.14
  5. Step 5: Solve for x
    x = 19,822,026,997.14/199,431.61
  6. Step 6: Final answer
    x = 99,392.60

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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.