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Finding the Fourth Proportional to 245,992.29, 369,040.22 and 139,427.31

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Solution

The fourth proportional to 245,992.29, 369,040.22 and 139,427.31 is: 209,170.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,992.29 : 369,040.22 = 139,427.31 : x
  2. Step 2: Convert to fraction form
    245,992.29/369,040.22 = 139,427.31/x
  3. Step 3: Cross multiply
    245,992.29x = 369,040.22 × 139,427.31
  4. Step 4: Simplify right side
    245,992.29x = 51,454,284,290.17
  5. Step 5: Solve for x
    x = 51,454,284,290.17/245,992.29
  6. Step 6: Final answer
    x = 209,170.31

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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.