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Finding the Fourth Proportional to 438,427, 605,029.67 and 247,436.29

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Solution

The fourth proportional to 438,427, 605,029.67 and 247,436.29 is: 341,462.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,427 : 605,029.67 = 247,436.29 : x
  2. Step 2: Convert to fraction form
    438,427/605,029.67 = 247,436.29/x
  3. Step 3: Cross multiply
    438,427x = 605,029.67 × 247,436.29
  4. Step 4: Simplify right side
    438,427x = 149,706,296,884.72
  5. Step 5: Solve for x
    x = 149,706,296,884.72/438,427
  6. Step 6: Final answer
    x = 341,462.31

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1.5x scale

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.