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Finding the Fourth Proportional to 317,143.70, 437,658.09 and 173,906.06

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Solution

The fourth proportional to 317,143.70, 437,658.09 and 173,906.06 is: 239,990.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,143.70 : 437,658.09 = 173,906.06 : x
  2. Step 2: Convert to fraction form
    317,143.70/437,658.09 = 173,906.06/x
  3. Step 3: Cross multiply
    317,143.70x = 437,658.09 × 173,906.06
  4. Step 4: Simplify right side
    317,143.70x = 76,111,394,059.03
  5. Step 5: Solve for x
    x = 76,111,394,059.03/317,143.70
  6. Step 6: Final answer
    x = 239,990.24

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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.