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Finding the Fourth Proportional to 206,003.80, 308,487.30 and 135,501.40

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Solution

The fourth proportional to 206,003.80, 308,487.30 and 135,501.40 is: 202,911.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,003.80 : 308,487.30 = 135,501.40 : x
  2. Step 2: Convert to fraction form
    206,003.80/308,487.30 = 135,501.40/x
  3. Step 3: Cross multiply
    206,003.80x = 308,487.30 × 135,501.40
  4. Step 4: Simplify right side
    206,003.80x = 41,800,461,032.22
  5. Step 5: Solve for x
    x = 41,800,461,032.22/206,003.80
  6. Step 6: Final answer
    x = 202,911.12

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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.