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Finding the Fourth Proportional to 371,044.75, 512,041.89 and 209,896.39

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Solution

The fourth proportional to 371,044.75, 512,041.89 and 209,896.39 is: 289,657.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,044.75 : 512,041.89 = 209,896.39 : x
  2. Step 2: Convert to fraction form
    371,044.75/512,041.89 = 209,896.39/x
  3. Step 3: Cross multiply
    371,044.75x = 512,041.89 × 209,896.39
  4. Step 4: Simplify right side
    371,044.75x = 107,475,744,239.78
  5. Step 5: Solve for x
    x = 107,475,744,239.78/371,044.75
  6. Step 6: Final answer
    x = 289,657.09

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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.