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Finding the Fourth Proportional to 206,566.80, 309,850.20 and 112,088.40

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Solution

The fourth proportional to 206,566.80, 309,850.20 and 112,088.40 is: 168,132.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,566.80 : 309,850.20 = 112,088.40 : x
  2. Step 2: Convert to fraction form
    206,566.80/309,850.20 = 112,088.40/x
  3. Step 3: Cross multiply
    206,566.80x = 309,850.20 × 112,088.40
  4. Step 4: Simplify right side
    206,566.80x = 34,730,613,157.68
  5. Step 5: Solve for x
    x = 34,730,613,157.68/206,566.80
  6. Step 6: Final answer
    x = 168,132.60

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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.