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Finding the Fourth Proportional to 389,767.90, 584,214.45 and 165,090.10

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Solution

The fourth proportional to 389,767.90, 584,214.45 and 165,090.10 is: 247,449.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,767.90 : 584,214.45 = 165,090.10 : x
  2. Step 2: Convert to fraction form
    389,767.90/584,214.45 = 165,090.10/x
  3. Step 3: Cross multiply
    389,767.90x = 584,214.45 × 165,090.10
  4. Step 4: Simplify right side
    389,767.90x = 96,448,021,971.95
  5. Step 5: Solve for x
    x = 96,448,021,971.95/389,767.90
  6. Step 6: Final answer
    x = 247,449.88

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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.