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Finding the Fourth Proportional to 258,963.68, 357,379.58 and 142,681.94

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Solution

The fourth proportional to 258,963.68, 357,379.58 and 142,681.94 is: 196,906.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,963.68 : 357,379.58 = 142,681.94 : x
  2. Step 2: Convert to fraction form
    258,963.68/357,379.58 = 142,681.94/x
  3. Step 3: Cross multiply
    258,963.68x = 357,379.58 × 142,681.94
  4. Step 4: Simplify right side
    258,963.68x = 50,991,611,790.79
  5. Step 5: Solve for x
    x = 50,991,611,790.79/258,963.68
  6. Step 6: Final answer
    x = 196,906.42

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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.