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Finding the Fourth Proportional to 389,809.12, 584,665.08 and 109,348.24

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Solution

The fourth proportional to 389,809.12, 584,665.08 and 109,348.24 is: 164,008.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,809.12 : 584,665.08 = 109,348.24 : x
  2. Step 2: Convert to fraction form
    389,809.12/584,665.08 = 109,348.24/x
  3. Step 3: Cross multiply
    389,809.12x = 584,665.08 × 109,348.24
  4. Step 4: Simplify right side
    389,809.12x = 63,932,097,487.46
  5. Step 5: Solve for x
    x = 63,932,097,487.46/389,809.12
  6. Step 6: Final answer
    x = 164,008.73

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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.