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Finding the Fourth Proportional to 808,800.80, 1,213,201.20 and 217,824.80

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Solution

The fourth proportional to 808,800.80, 1,213,201.20 and 217,824.80 is: 326,737.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,800.80 : 1,213,201.20 = 217,824.80 : x
  2. Step 2: Convert to fraction form
    808,800.80/1,213,201.20 = 217,824.80/x
  3. Step 3: Cross multiply
    808,800.80x = 1,213,201.20 × 217,824.80
  4. Step 4: Simplify right side
    808,800.80x = 264,265,308,749.76
  5. Step 5: Solve for x
    x = 264,265,308,749.76/808,800.80
  6. Step 6: Final answer
    x = 326,737.20

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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.