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Finding the Fourth Proportional to 341,859.43, 512,789.52 and 89,139.70

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Solution

The fourth proportional to 341,859.43, 512,789.52 and 89,139.70 is: 133,709.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,859.43 : 512,789.52 = 89,139.70 : x
  2. Step 2: Convert to fraction form
    341,859.43/512,789.52 = 89,139.70/x
  3. Step 3: Cross multiply
    341,859.43x = 512,789.52 × 89,139.70
  4. Step 4: Simplify right side
    341,859.43x = 45,709,903,975.94
  5. Step 5: Solve for x
    x = 45,709,903,975.94/341,859.43
  6. Step 6: Final answer
    x = 133,709.65

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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.