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Finding the Fourth Proportional to 389,996.70, 584,995.06 and 105,687.24

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Solution

The fourth proportional to 389,996.70, 584,995.06 and 105,687.24 is: 158,530.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,996.70 : 584,995.06 = 105,687.24 : x
  2. Step 2: Convert to fraction form
    389,996.70/584,995.06 = 105,687.24/x
  3. Step 3: Cross multiply
    389,996.70x = 584,995.06 × 105,687.24
  4. Step 4: Simplify right side
    389,996.70x = 61,826,514,503.30
  5. Step 5: Solve for x
    x = 61,826,514,503.30/389,996.70
  6. Step 6: Final answer
    x = 158,530.86

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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.