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Finding the Fourth Proportional to 258,647.54, 356,943.70 and 156,615.34

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Solution

The fourth proportional to 258,647.54, 356,943.70 and 156,615.34 is: 216,135.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,647.54 : 356,943.70 = 156,615.34 : x
  2. Step 2: Convert to fraction form
    258,647.54/356,943.70 = 156,615.34/x
  3. Step 3: Cross multiply
    258,647.54x = 356,943.70 × 156,615.34
  4. Step 4: Simplify right side
    258,647.54x = 55,902,858,936.36
  5. Step 5: Solve for x
    x = 55,902,858,936.36/258,647.54
  6. Step 6: Final answer
    x = 216,135.28

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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.