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Finding the Fourth Proportional to 220,212.56, 303,897.32 and 124,739.08

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Solution

The fourth proportional to 220,212.56, 303,897.32 and 124,739.08 is: 172,142.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,212.56 : 303,897.32 = 124,739.08 : x
  2. Step 2: Convert to fraction form
    220,212.56/303,897.32 = 124,739.08/x
  3. Step 3: Cross multiply
    220,212.56x = 303,897.32 × 124,739.08
  4. Step 4: Simplify right side
    220,212.56x = 37,907,872,111.27
  5. Step 5: Solve for x
    x = 37,907,872,111.27/220,212.56
  6. Step 6: Final answer
    x = 172,142.19

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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.