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Finding the Fourth Proportional to 210,745.02, 290,824.11 and 115,251.42

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Solution

The fourth proportional to 210,745.02, 290,824.11 and 115,251.42 is: 159,044.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,745.02 : 290,824.11 = 115,251.42 : x
  2. Step 2: Convert to fraction form
    210,745.02/290,824.11 = 115,251.42/x
  3. Step 3: Cross multiply
    210,745.02x = 290,824.11 × 115,251.42
  4. Step 4: Simplify right side
    210,745.02x = 33,517,891,647.74
  5. Step 5: Solve for x
    x = 33,517,891,647.74/210,745.02
  6. Step 6: Final answer
    x = 159,044.76

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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.