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Finding the Fourth Proportional to 339,921.20, 510,027.60 and 173,709.20

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Solution

The fourth proportional to 339,921.20, 510,027.60 and 173,709.20 is: 260,638.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,921.20 : 510,027.60 = 173,709.20 : x
  2. Step 2: Convert to fraction form
    339,921.20/510,027.60 = 173,709.20/x
  3. Step 3: Cross multiply
    339,921.20x = 510,027.60 × 173,709.20
  4. Step 4: Simplify right side
    339,921.20x = 88,596,486,373.92
  5. Step 5: Solve for x
    x = 88,596,486,373.92/339,921.20
  6. Step 6: Final answer
    x = 260,638.31

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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.