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Finding the Fourth Proportional to 245,706.54, 339,018.93 and 138,237.36

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Solution

The fourth proportional to 245,706.54, 339,018.93 and 138,237.36 is: 190,736.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,706.54 : 339,018.93 = 138,237.36 : x
  2. Step 2: Convert to fraction form
    245,706.54/339,018.93 = 138,237.36/x
  3. Step 3: Cross multiply
    245,706.54x = 339,018.93 × 138,237.36
  4. Step 4: Simplify right side
    245,706.54x = 46,865,083,073.58
  5. Step 5: Solve for x
    x = 46,865,083,073.58/245,706.54
  6. Step 6: Final answer
    x = 190,736.00

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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.