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Finding the Fourth Proportional to 368,063.28, 552,099.78 and 131,420.16

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Solution

The fourth proportional to 368,063.28, 552,099.78 and 131,420.16 is: 197,131.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,063.28 : 552,099.78 = 131,420.16 : x
  2. Step 2: Convert to fraction form
    368,063.28/552,099.78 = 131,420.16/x
  3. Step 3: Cross multiply
    368,063.28x = 552,099.78 × 131,420.16
  4. Step 4: Simplify right side
    368,063.28x = 72,557,041,423.56
  5. Step 5: Solve for x
    x = 72,557,041,423.56/368,063.28
  6. Step 6: Final answer
    x = 197,131.98

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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.