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Finding the Fourth Proportional to 567,212.12, 782,742.65 and 309,091.31

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Solution

The fourth proportional to 567,212.12, 782,742.65 and 309,091.31 is: 426,540.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,212.12 : 782,742.65 = 309,091.31 : x
  2. Step 2: Convert to fraction form
    567,212.12/782,742.65 = 309,091.31/x
  3. Step 3: Cross multiply
    567,212.12x = 782,742.65 × 309,091.31
  4. Step 4: Simplify right side
    567,212.12x = 241,938,945,622.20
  5. Step 5: Solve for x
    x = 241,938,945,622.20/567,212.12
  6. Step 6: Final answer
    x = 426,540.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.