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Finding the Fourth Proportional to 258,682.36, 356,975.88 and 143,957.80

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Solution

The fourth proportional to 258,682.36, 356,975.88 and 143,957.80 is: 198,658.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,682.36 : 356,975.88 = 143,957.80 : x
  2. Step 2: Convert to fraction form
    258,682.36/356,975.88 = 143,957.80/x
  3. Step 3: Cross multiply
    258,682.36x = 356,975.88 × 143,957.80
  4. Step 4: Simplify right side
    258,682.36x = 51,389,462,337.86
  5. Step 5: Solve for x
    x = 51,389,462,337.86/258,682.36
  6. Step 6: Final answer
    x = 198,658.55

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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.