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Finding the Fourth Proportional to 258,644.94, 356,886.54 and 143,908.62

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Solution

The fourth proportional to 258,644.94, 356,886.54 and 143,908.62 is: 198,569.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,644.94 : 356,886.54 = 143,908.62 : x
  2. Step 2: Convert to fraction form
    258,644.94/356,886.54 = 143,908.62/x
  3. Step 3: Cross multiply
    258,644.94x = 356,886.54 × 143,908.62
  4. Step 4: Simplify right side
    258,644.94x = 51,359,049,467.97
  5. Step 5: Solve for x
    x = 51,359,049,467.97/258,644.94
  6. Step 6: Final answer
    x = 198,569.71

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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.