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Finding the Fourth Proportional to 341,319.11, 512,207.20 and 141,639.69

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Solution

The fourth proportional to 341,319.11, 512,207.20 and 141,639.69 is: 212,554.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,319.11 : 512,207.20 = 141,639.69 : x
  2. Step 2: Convert to fraction form
    341,319.11/512,207.20 = 141,639.69/x
  3. Step 3: Cross multiply
    341,319.11x = 512,207.20 × 141,639.69
  4. Step 4: Simplify right side
    341,319.11x = 72,548,869,023.77
  5. Step 5: Solve for x
    x = 72,548,869,023.77/341,319.11
  6. Step 6: Final answer
    x = 212,554.37

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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.