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Finding the Fourth Proportional to 258,989.62, 388,484.43 and 92,894.26

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Solution

The fourth proportional to 258,989.62, 388,484.43 and 92,894.26 is: 139,341.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,989.62 : 388,484.43 = 92,894.26 : x
  2. Step 2: Convert to fraction form
    258,989.62/388,484.43 = 92,894.26/x
  3. Step 3: Cross multiply
    258,989.62x = 388,484.43 × 92,894.26
  4. Step 4: Simplify right side
    258,989.62x = 36,087,973,646.37
  5. Step 5: Solve for x
    x = 36,087,973,646.37/258,989.62
  6. Step 6: Final answer
    x = 139,341.39

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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.