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Finding the Fourth Proportional to 258,073.29, 356,129.11 and 143,359.37

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Solution

The fourth proportional to 258,073.29, 356,129.11 and 143,359.37 is: 197,829.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,073.29 : 356,129.11 = 143,359.37 : x
  2. Step 2: Convert to fraction form
    258,073.29/356,129.11 = 143,359.37/x
  3. Step 3: Cross multiply
    258,073.29x = 356,129.11 × 143,359.37
  4. Step 4: Simplify right side
    258,073.29x = 51,054,443,775.90
  5. Step 5: Solve for x
    x = 51,054,443,775.90/258,073.29
  6. Step 6: Final answer
    x = 197,829.24

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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.