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Finding the Fourth Proportional to 207,224.78, 285,970.62 and 122,347.30

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Solution

The fourth proportional to 207,224.78, 285,970.62 and 122,347.30 is: 168,839.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,224.78 : 285,970.62 = 122,347.30 : x
  2. Step 2: Convert to fraction form
    207,224.78/285,970.62 = 122,347.30/x
  3. Step 3: Cross multiply
    207,224.78x = 285,970.62 × 122,347.30
  4. Step 4: Simplify right side
    207,224.78x = 34,987,733,236.33
  5. Step 5: Solve for x
    x = 34,987,733,236.33/207,224.78
  6. Step 6: Final answer
    x = 168,839.52

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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.