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Finding the Fourth Proportional to 611,142.44, 843,308.16 and 339,221.79

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Solution

The fourth proportional to 611,142.44, 843,308.16 and 339,221.79 is: 468,088.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,142.44 : 843,308.16 = 339,221.79 : x
  2. Step 2: Convert to fraction form
    611,142.44/843,308.16 = 339,221.79/x
  3. Step 3: Cross multiply
    611,142.44x = 843,308.16 × 339,221.79
  4. Step 4: Simplify right side
    611,142.44x = 286,068,503,556.81
  5. Step 5: Solve for x
    x = 286,068,503,556.81/611,142.44
  6. Step 6: Final answer
    x = 468,088.10

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