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Finding the Fourth Proportional to 258,356.72, 356,532.36 and 145,179.92

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Solution

The fourth proportional to 258,356.72, 356,532.36 and 145,179.92 is: 200,348.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,356.72 : 356,532.36 = 145,179.92 : x
  2. Step 2: Convert to fraction form
    258,356.72/356,532.36 = 145,179.92/x
  3. Step 3: Cross multiply
    258,356.72x = 356,532.36 × 145,179.92
  4. Step 4: Simplify right side
    258,356.72x = 51,761,339,502.21
  5. Step 5: Solve for x
    x = 51,761,339,502.21/258,356.72
  6. Step 6: Final answer
    x = 200,348.34

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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.