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Finding the Fourth Proportional to 258,672.65, 356,964.59 and 145,495.13

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Solution

The fourth proportional to 258,672.65, 356,964.59 and 145,495.13 is: 200,781.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,672.65 : 356,964.59 = 145,495.13 : x
  2. Step 2: Convert to fraction form
    258,672.65/356,964.59 = 145,495.13/x
  3. Step 3: Cross multiply
    258,672.65x = 356,964.59 × 145,495.13
  4. Step 4: Simplify right side
    258,672.65x = 51,936,608,006.36
  5. Step 5: Solve for x
    x = 51,936,608,006.36/258,672.65
  6. Step 6: Final answer
    x = 200,781.22

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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.