Home / 305,193.09-421,162.11-169,227.30

Finding the Fourth Proportional to 305,193.09, 421,162.11 and 169,227.30

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Solution

The fourth proportional to 305,193.09, 421,162.11 and 169,227.30 is: 233,531.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,193.09 : 421,162.11 = 169,227.30 : x
  2. Step 2: Convert to fraction form
    305,193.09/421,162.11 = 169,227.30/x
  3. Step 3: Cross multiply
    305,193.09x = 421,162.11 × 169,227.30
  4. Step 4: Simplify right side
    305,193.09x = 71,272,126,737.60
  5. Step 5: Solve for x
    x = 71,272,126,737.60/305,193.09
  6. Step 6: Final answer
    x = 233,531.26

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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.