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Finding the Fourth Proportional to 270,604.20, 405,906.30 and 83,615.40

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Solution

The fourth proportional to 270,604.20, 405,906.30 and 83,615.40 is: 125,423.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,604.20 : 405,906.30 = 83,615.40 : x
  2. Step 2: Convert to fraction form
    270,604.20/405,906.30 = 83,615.40/x
  3. Step 3: Cross multiply
    270,604.20x = 405,906.30 × 83,615.40
  4. Step 4: Simplify right side
    270,604.20x = 33,940,017,637.02
  5. Step 5: Solve for x
    x = 33,940,017,637.02/270,604.20
  6. Step 6: Final answer
    x = 125,423.10

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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.