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Finding the Fourth Proportional to 539,388.60, 808,305.30 and 239,623.80

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Solution

The fourth proportional to 539,388.60, 808,305.30 and 239,623.80 is: 359,090.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,388.60 : 808,305.30 = 239,623.80 : x
  2. Step 2: Convert to fraction form
    539,388.60/808,305.30 = 239,623.80/x
  3. Step 3: Cross multiply
    539,388.60x = 808,305.30 × 239,623.80
  4. Step 4: Simplify right side
    539,388.60x = 193,689,187,546.14
  5. Step 5: Solve for x
    x = 193,689,187,546.14/539,388.60
  6. Step 6: Final answer
    x = 359,090.25

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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.