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Finding the Fourth Proportional to 339,717.60, 510,159.60 and 221,911.20

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Solution

The fourth proportional to 339,717.60, 510,159.60 and 221,911.20 is: 333,247.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,717.60 : 510,159.60 = 221,911.20 : x
  2. Step 2: Convert to fraction form
    339,717.60/510,159.60 = 221,911.20/x
  3. Step 3: Cross multiply
    339,717.60x = 510,159.60 × 221,911.20
  4. Step 4: Simplify right side
    339,717.60x = 113,210,129,027.52
  5. Step 5: Solve for x
    x = 113,210,129,027.52/339,717.60
  6. Step 6: Final answer
    x = 333,247.76

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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.