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Finding the Fourth Proportional to 519,358.90, 778,892.55 and 164,481.70

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Solution

The fourth proportional to 519,358.90, 778,892.55 and 164,481.70 is: 246,676.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,358.90 : 778,892.55 = 164,481.70 : x
  2. Step 2: Convert to fraction form
    519,358.90/778,892.55 = 164,481.70/x
  3. Step 3: Cross multiply
    519,358.90x = 778,892.55 × 164,481.70
  4. Step 4: Simplify right side
    519,358.90x = 128,113,570,741.34
  5. Step 5: Solve for x
    x = 128,113,570,741.34/519,358.90
  6. Step 6: Final answer
    x = 246,676.37

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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.