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Finding the Fourth Proportional to 258,675.19, 356,964.45 and 143,952.00

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Solution

The fourth proportional to 258,675.19, 356,964.45 and 143,952.00 is: 198,649.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,675.19 : 356,964.45 = 143,952.00 : x
  2. Step 2: Convert to fraction form
    258,675.19/356,964.45 = 143,952.00/x
  3. Step 3: Cross multiply
    258,675.19x = 356,964.45 × 143,952.00
  4. Step 4: Simplify right side
    258,675.19x = 51,385,744,627.96
  5. Step 5: Solve for x
    x = 51,385,744,627.96/258,675.19
  6. Step 6: Final answer
    x = 198,649.69

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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.