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Finding the Fourth Proportional to 605,347.47, 907,705.89 and 225,956.21

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Solution

The fourth proportional to 605,347.47, 907,705.89 and 225,956.21 is: 338,816.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,347.47 : 907,705.89 = 225,956.21 : x
  2. Step 2: Convert to fraction form
    605,347.47/907,705.89 = 225,956.21/x
  3. Step 3: Cross multiply
    605,347.47x = 907,705.89 × 225,956.21
  4. Step 4: Simplify right side
    605,347.47x = 205,101,778,160.55
  5. Step 5: Solve for x
    x = 205,101,778,160.55/605,347.47
  6. Step 6: Final answer
    x = 338,816.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.