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Finding the Fourth Proportional to 258,772.78, 388,136.86 and 157,544.62

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Solution

The fourth proportional to 258,772.78, 388,136.86 and 157,544.62 is: 236,303.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,772.78 : 388,136.86 = 157,544.62 : x
  2. Step 2: Convert to fraction form
    258,772.78/388,136.86 = 157,544.62/x
  3. Step 3: Cross multiply
    258,772.78x = 388,136.86 × 157,544.62
  4. Step 4: Simplify right side
    258,772.78x = 61,148,873,092.86
  5. Step 5: Solve for x
    x = 61,148,873,092.86/258,772.78
  6. Step 6: Final answer
    x = 236,303.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.