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Finding the Fourth Proportional to 206,784.80, 310,234.80 and 101,607.20

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Solution

The fourth proportional to 206,784.80, 310,234.80 and 101,607.20 is: 152,439.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,784.80 : 310,234.80 = 101,607.20 : x
  2. Step 2: Convert to fraction form
    206,784.80/310,234.80 = 101,607.20/x
  3. Step 3: Cross multiply
    206,784.80x = 310,234.80 × 101,607.20
  4. Step 4: Simplify right side
    206,784.80x = 31,522,089,370.56
  5. Step 5: Solve for x
    x = 31,522,089,370.56/206,784.80
  6. Step 6: Final answer
    x = 152,439.10

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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.