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Finding the Fourth Proportional to 221,593.72, 305,810.10 and 126,109.08

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Solution

The fourth proportional to 221,593.72, 305,810.10 and 126,109.08 is: 174,036.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,593.72 : 305,810.10 = 126,109.08 : x
  2. Step 2: Convert to fraction form
    221,593.72/305,810.10 = 126,109.08/x
  3. Step 3: Cross multiply
    221,593.72x = 305,810.10 × 126,109.08
  4. Step 4: Simplify right side
    221,593.72x = 38,565,430,365.71
  5. Step 5: Solve for x
    x = 38,565,430,365.71/221,593.72
  6. Step 6: Final answer
    x = 174,036.66

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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.