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Finding the Fourth Proportional to 438,597.78, 605,265.09 and 247,623.48

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Solution

The fourth proportional to 438,597.78, 605,265.09 and 247,623.48 is: 341,720.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,597.78 : 605,265.09 = 247,623.48 : x
  2. Step 2: Convert to fraction form
    438,597.78/605,265.09 = 247,623.48/x
  3. Step 3: Cross multiply
    438,597.78x = 605,265.09 × 247,623.48
  4. Step 4: Simplify right side
    438,597.78x = 149,877,844,881.99
  5. Step 5: Solve for x
    x = 149,877,844,881.99/438,597.78
  6. Step 6: Final answer
    x = 341,720.48

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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.