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Finding the Fourth Proportional to 307,388.22, 424,194.90 and 171,422.32

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Solution

The fourth proportional to 307,388.22, 424,194.90 and 171,422.32 is: 236,562.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,388.22 : 424,194.90 = 171,422.32 : x
  2. Step 2: Convert to fraction form
    307,388.22/424,194.90 = 171,422.32/x
  3. Step 3: Cross multiply
    307,388.22x = 424,194.90 × 171,422.32
  4. Step 4: Simplify right side
    307,388.22x = 72,716,473,890.17
  5. Step 5: Solve for x
    x = 72,716,473,890.17/307,388.22
  6. Step 6: Final answer
    x = 236,562.33

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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.