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Finding the Fourth Proportional to 341,979.45, 512,998.34 and 89,293.47

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Solution

The fourth proportional to 341,979.45, 512,998.34 and 89,293.47 is: 133,947.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,979.45 : 512,998.34 = 89,293.47 : x
  2. Step 2: Convert to fraction form
    341,979.45/512,998.34 = 89,293.47/x
  3. Step 3: Cross multiply
    341,979.45x = 512,998.34 × 89,293.47
  4. Step 4: Simplify right side
    341,979.45x = 45,807,401,436.37
  5. Step 5: Solve for x
    x = 45,807,401,436.37/341,979.45
  6. Step 6: Final answer
    x = 133,947.82

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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.