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Finding the Fourth Proportional to 371,859, 559,811.81 and 338,791.56

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Solution

The fourth proportional to 371,859, 559,811.81 and 338,791.56 is: 510,030.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,859 : 559,811.81 = 338,791.56 : x
  2. Step 2: Convert to fraction form
    371,859/559,811.81 = 338,791.56/x
  3. Step 3: Cross multiply
    371,859x = 559,811.81 × 338,791.56
  4. Step 4: Simplify right side
    371,859x = 189,659,516,416.32
  5. Step 5: Solve for x
    x = 189,659,516,416.32/371,859
  6. Step 6: Final answer
    x = 510,030.73

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.