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Finding the Fourth Proportional to 220,712.24, 304,561.80 and 123,893.90

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Solution

The fourth proportional to 220,712.24, 304,561.80 and 123,893.90 is: 170,961.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,712.24 : 304,561.80 = 123,893.90 : x
  2. Step 2: Convert to fraction form
    220,712.24/304,561.80 = 123,893.90/x
  3. Step 3: Cross multiply
    220,712.24x = 304,561.80 × 123,893.90
  4. Step 4: Simplify right side
    220,712.24x = 37,733,349,193.02
  5. Step 5: Solve for x
    x = 37,733,349,193.02/220,712.24
  6. Step 6: Final answer
    x = 170,961.74

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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.