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Finding the Fourth Proportional to 291,634.80, 437,452.17 and 70,018.80

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Solution

The fourth proportional to 291,634.80, 437,452.17 and 70,018.80 is: 105,028.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,634.80 : 437,452.17 = 70,018.80 : x
  2. Step 2: Convert to fraction form
    291,634.80/437,452.17 = 70,018.80/x
  3. Step 3: Cross multiply
    291,634.80x = 437,452.17 × 70,018.80
  4. Step 4: Simplify right side
    291,634.80x = 30,629,876,000.80
  5. Step 5: Solve for x
    x = 30,629,876,000.80/291,634.80
  6. Step 6: Final answer
    x = 105,028.19

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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.