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Finding the Fourth Proportional to 341,570.30, 512,163.45 and 131,215.10

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Solution

The fourth proportional to 341,570.30, 512,163.45 and 131,215.10 is: 196,748.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,570.30 : 512,163.45 = 131,215.10 : x
  2. Step 2: Convert to fraction form
    341,570.30/512,163.45 = 131,215.10/x
  3. Step 3: Cross multiply
    341,570.30x = 512,163.45 × 131,215.10
  4. Step 4: Simplify right side
    341,570.30x = 67,203,578,308.10
  5. Step 5: Solve for x
    x = 67,203,578,308.10/341,570.30
  6. Step 6: Final answer
    x = 196,748.89

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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.