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Finding the Fourth Proportional to 519,889.05, 779,827.38 and 164,906.15

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Solution

The fourth proportional to 519,889.05, 779,827.38 and 164,906.15 is: 247,357.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,889.05 : 779,827.38 = 164,906.15 : x
  2. Step 2: Convert to fraction form
    519,889.05/779,827.38 = 164,906.15/x
  3. Step 3: Cross multiply
    519,889.05x = 779,827.38 × 164,906.15
  4. Step 4: Simplify right side
    519,889.05x = 128,598,327,001.25
  5. Step 5: Solve for x
    x = 128,598,327,001.25/519,889.05
  6. Step 6: Final answer
    x = 247,357.25

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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.