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Finding the Fourth Proportional to 206,886.80, 310,330.20 and 73,771.40

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Solution

The fourth proportional to 206,886.80, 310,330.20 and 73,771.40 is: 110,657.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,886.80 : 310,330.20 = 73,771.40 : x
  2. Step 2: Convert to fraction form
    206,886.80/310,330.20 = 73,771.40/x
  3. Step 3: Cross multiply
    206,886.80x = 310,330.20 × 73,771.40
  4. Step 4: Simplify right side
    206,886.80x = 22,893,493,316.28
  5. Step 5: Solve for x
    x = 22,893,493,316.28/206,886.80
  6. Step 6: Final answer
    x = 110,657.10

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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.