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Finding the Fourth Proportional to 228,920.40, 343,380.60 and 158,936.40

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Solution

The fourth proportional to 228,920.40, 343,380.60 and 158,936.40 is: 238,404.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,920.40 : 343,380.60 = 158,936.40 : x
  2. Step 2: Convert to fraction form
    228,920.40/343,380.60 = 158,936.40/x
  3. Step 3: Cross multiply
    228,920.40x = 343,380.60 × 158,936.40
  4. Step 4: Simplify right side
    228,920.40x = 54,575,676,393.84
  5. Step 5: Solve for x
    x = 54,575,676,393.84/228,920.40
  6. Step 6: Final answer
    x = 238,404.60

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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.