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Finding the Fourth Proportional to 561,906.29, 842,719.13 and 220,419.12

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Solution

The fourth proportional to 561,906.29, 842,719.13 and 220,419.12 is: 330,573.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,906.29 : 842,719.13 = 220,419.12 : x
  2. Step 2: Convert to fraction form
    561,906.29/842,719.13 = 220,419.12/x
  3. Step 3: Cross multiply
    561,906.29x = 842,719.13 × 220,419.12
  4. Step 4: Simplify right side
    561,906.29x = 185,751,404,779.47
  5. Step 5: Solve for x
    x = 185,751,404,779.47/561,906.29
  6. Step 6: Final answer
    x = 330,573.63

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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.