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Finding the Fourth Proportional to 605,381.68, 907,649.70 and 268,239.25

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Solution

The fourth proportional to 605,381.68, 907,649.70 and 268,239.25 is: 402,171.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,381.68 : 907,649.70 = 268,239.25 : x
  2. Step 2: Convert to fraction form
    605,381.68/907,649.70 = 268,239.25/x
  3. Step 3: Cross multiply
    605,381.68x = 907,649.70 × 268,239.25
  4. Step 4: Simplify right side
    605,381.68x = 243,467,274,790.73
  5. Step 5: Solve for x
    x = 243,467,274,790.73/605,381.68
  6. Step 6: Final answer
    x = 402,171.53

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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.