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Finding the Fourth Proportional to 371,039.54, 512,034.75 and 209,891.17

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Solution

The fourth proportional to 371,039.54, 512,034.75 and 209,891.17 is: 289,649.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,039.54 : 512,034.75 = 209,891.17 : x
  2. Step 2: Convert to fraction form
    371,039.54/512,034.75 = 209,891.17/x
  3. Step 3: Cross multiply
    371,039.54x = 512,034.75 × 209,891.17
  4. Step 4: Simplify right side
    371,039.54x = 107,471,569,148.53
  5. Step 5: Solve for x
    x = 107,471,569,148.53/371,039.54
  6. Step 6: Final answer
    x = 289,649.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.