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Finding the Fourth Proportional to 371,003.28, 556,129.26 and 146,522

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Solution

The fourth proportional to 371,003.28, 556,129.26 and 146,522 is: 219,634.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,003.28 : 556,129.26 = 146,522 : x
  2. Step 2: Convert to fraction form
    371,003.28/556,129.26 = 146,522/x
  3. Step 3: Cross multiply
    371,003.28x = 556,129.26 × 146,522
  4. Step 4: Simplify right side
    371,003.28x = 81,485,171,433.72
  5. Step 5: Solve for x
    x = 81,485,171,433.72/371,003.28
  6. Step 6: Final answer
    x = 219,634.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.