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Finding the Fourth Proportional to 368,370.80, 552,685.80 and 131,721.20

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Solution

The fourth proportional to 368,370.80, 552,685.80 and 131,721.20 is: 197,628.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,370.80 : 552,685.80 = 131,721.20 : x
  2. Step 2: Convert to fraction form
    368,370.80/552,685.80 = 131,721.20/x
  3. Step 3: Cross multiply
    368,370.80x = 552,685.80 × 131,721.20
  4. Step 4: Simplify right side
    368,370.80x = 72,800,436,798.96
  5. Step 5: Solve for x
    x = 72,800,436,798.96/368,370.80
  6. Step 6: Final answer
    x = 197,628.14

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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.