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Finding the Fourth Proportional to 339,285.34, 508,778.52 and 159,421.94

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Solution

The fourth proportional to 339,285.34, 508,778.52 and 159,421.94 is: 239,062.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,285.34 : 508,778.52 = 159,421.94 : x
  2. Step 2: Convert to fraction form
    339,285.34/508,778.52 = 159,421.94/x
  3. Step 3: Cross multiply
    339,285.34x = 508,778.52 × 159,421.94
  4. Step 4: Simplify right side
    339,285.34x = 81,110,457,454.92
  5. Step 5: Solve for x
    x = 81,110,457,454.92/339,285.34
  6. Step 6: Final answer
    x = 239,062.66

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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.