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Finding the Fourth Proportional to 371,991.88, 513,396.28 and 219,044.30

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Solution

The fourth proportional to 371,991.88, 513,396.28 and 219,044.30 is: 302,309.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,991.88 : 513,396.28 = 219,044.30 : x
  2. Step 2: Convert to fraction form
    371,991.88/513,396.28 = 219,044.30/x
  3. Step 3: Cross multiply
    371,991.88x = 513,396.28 × 219,044.30
  4. Step 4: Simplify right side
    371,991.88x = 112,456,528,657.56
  5. Step 5: Solve for x
    x = 112,456,528,657.56/371,991.88
  6. Step 6: Final answer
    x = 302,309.10

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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.