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Finding the Fourth Proportional to 486,727.60, 730,091.40 and 206,208.40

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Solution

The fourth proportional to 486,727.60, 730,091.40 and 206,208.40 is: 309,312.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,727.60 : 730,091.40 = 206,208.40 : x
  2. Step 2: Convert to fraction form
    486,727.60/730,091.40 = 206,208.40/x
  3. Step 3: Cross multiply
    486,727.60x = 730,091.40 × 206,208.40
  4. Step 4: Simplify right side
    486,727.60x = 150,550,979,447.76
  5. Step 5: Solve for x
    x = 150,550,979,447.76/486,727.60
  6. Step 6: Final answer
    x = 309,312.60

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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.