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Finding the Fourth Proportional to 368,778.84, 552,818.34 and 131,999.64

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Solution

The fourth proportional to 368,778.84, 552,818.34 and 131,999.64 is: 197,874.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,778.84 : 552,818.34 = 131,999.64 : x
  2. Step 2: Convert to fraction form
    368,778.84/552,818.34 = 131,999.64/x
  3. Step 3: Cross multiply
    368,778.84x = 552,818.34 × 131,999.64
  4. Step 4: Simplify right side
    368,778.84x = 72,971,821,865.40
  5. Step 5: Solve for x
    x = 72,971,821,865.40/368,778.84
  6. Step 6: Final answer
    x = 197,874.21

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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.