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Finding the Fourth Proportional to 206,607.21, 309,246.42 and 106,631.22

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Solution

The fourth proportional to 206,607.21, 309,246.42 and 106,631.22 is: 159,603.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,607.21 : 309,246.42 = 106,631.22 : x
  2. Step 2: Convert to fraction form
    206,607.21/309,246.42 = 106,631.22/x
  3. Step 3: Cross multiply
    206,607.21x = 309,246.42 × 106,631.22
  4. Step 4: Simplify right side
    206,607.21x = 32,975,323,045.23
  5. Step 5: Solve for x
    x = 32,975,323,045.23/206,607.21
  6. Step 6: Final answer
    x = 159,603.93

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1.5x scale

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.