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Finding the Fourth Proportional to 611,107.92, 843,316.25 and 339,159.87

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Solution

The fourth proportional to 611,107.92, 843,316.25 and 339,159.87 is: 468,033.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,107.92 : 843,316.25 = 339,159.87 : x
  2. Step 2: Convert to fraction form
    611,107.92/843,316.25 = 339,159.87/x
  3. Step 3: Cross multiply
    611,107.92x = 843,316.25 × 339,159.87
  4. Step 4: Simplify right side
    611,107.92x = 286,019,028,023.09
  5. Step 5: Solve for x
    x = 286,019,028,023.09/611,107.92
  6. Step 6: Final answer
    x = 468,033.58

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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.