Home / 305,112.15-421,058.25-169,149.20

Finding the Fourth Proportional to 305,112.15, 421,058.25 and 169,149.20

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Solution

The fourth proportional to 305,112.15, 421,058.25 and 169,149.20 is: 233,427.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,112.15 : 421,058.25 = 169,149.20 : x
  2. Step 2: Convert to fraction form
    305,112.15/421,058.25 = 169,149.20/x
  3. Step 3: Cross multiply
    305,112.15x = 421,058.25 × 169,149.20
  4. Step 4: Simplify right side
    305,112.15x = 71,221,664,035.61
  5. Step 5: Solve for x
    x = 71,221,664,035.61/305,112.15
  6. Step 6: Final answer
    x = 233,427.82

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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.