Home / 258,678.56-356,972.76-145,501.28

Finding the Fourth Proportional to 258,678.56, 356,972.76 and 145,501.28

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Solution

The fourth proportional to 258,678.56, 356,972.76 and 145,501.28 is: 200,789.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,678.56 : 356,972.76 = 145,501.28 : x
  2. Step 2: Convert to fraction form
    258,678.56/356,972.76 = 145,501.28/x
  3. Step 3: Cross multiply
    258,678.56x = 356,972.76 × 145,501.28
  4. Step 4: Simplify right side
    258,678.56x = 51,939,993,505.13
  5. Step 5: Solve for x
    x = 51,939,993,505.13/258,678.56
  6. Step 6: Final answer
    x = 200,789.71

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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.