Home / 305,545.14-420,156.74-265,188.61

Finding the Fourth Proportional to 305,545.14, 420,156.74 and 265,188.61

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Solution

The fourth proportional to 305,545.14, 420,156.74 and 265,188.61 is: 364,662.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,545.14 : 420,156.74 = 265,188.61 : x
  2. Step 2: Convert to fraction form
    305,545.14/420,156.74 = 265,188.61/x
  3. Step 3: Cross multiply
    305,545.14x = 420,156.74 × 265,188.61
  4. Step 4: Simplify right side
    305,545.14x = 111,420,781,862.73
  5. Step 5: Solve for x
    x = 111,420,781,862.73/305,545.14
  6. Step 6: Final answer
    x = 364,662.26

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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.