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Finding the Fourth Proportional to 285,983.48, 394,675.89 and 165,129.86

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Solution

The fourth proportional to 285,983.48, 394,675.89 and 165,129.86 is: 227,890.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,983.48 : 394,675.89 = 165,129.86 : x
  2. Step 2: Convert to fraction form
    285,983.48/394,675.89 = 165,129.86/x
  3. Step 3: Cross multiply
    285,983.48x = 394,675.89 × 165,129.86
  4. Step 4: Simplify right side
    285,983.48x = 65,172,774,461.08
  5. Step 5: Solve for x
    x = 65,172,774,461.08/285,983.48
  6. Step 6: Final answer
    x = 227,890.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.