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Finding the Fourth Proportional to 519,638.22, 779,507.04 and 145,660.14

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Solution

The fourth proportional to 519,638.22, 779,507.04 and 145,660.14 is: 218,504.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,638.22 : 779,507.04 = 145,660.14 : x
  2. Step 2: Convert to fraction form
    519,638.22/779,507.04 = 145,660.14/x
  3. Step 3: Cross multiply
    519,638.22x = 779,507.04 × 145,660.14
  4. Step 4: Simplify right side
    519,638.22x = 113,543,104,577.39
  5. Step 5: Solve for x
    x = 113,543,104,577.39/519,638.22
  6. Step 6: Final answer
    x = 218,504.14

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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.