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Finding the Fourth Proportional to 352,712.59, 486,411.82 and 272,012.29

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Solution

The fourth proportional to 352,712.59, 486,411.82 and 272,012.29 is: 375,121.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,712.59 : 486,411.82 = 272,012.29 : x
  2. Step 2: Convert to fraction form
    352,712.59/486,411.82 = 272,012.29/x
  3. Step 3: Cross multiply
    352,712.59x = 486,411.82 × 272,012.29
  4. Step 4: Simplify right side
    352,712.59x = 132,309,993,041.27
  5. Step 5: Solve for x
    x = 132,309,993,041.27/352,712.59
  6. Step 6: Final answer
    x = 375,121.27

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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.