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Finding the Fourth Proportional to 611,109.88, 843,340.62 and 339,195.22

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Solution

The fourth proportional to 611,109.88, 843,340.62 and 339,195.22 is: 468,094.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,109.88 : 843,340.62 = 339,195.22 : x
  2. Step 2: Convert to fraction form
    611,109.88/843,340.62 = 339,195.22/x
  3. Step 3: Cross multiply
    611,109.88x = 843,340.62 × 339,195.22
  4. Step 4: Simplify right side
    611,109.88x = 286,057,107,135.84
  5. Step 5: Solve for x
    x = 286,057,107,135.84/611,109.88
  6. Step 6: Final answer
    x = 468,094.39

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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.