Home / 258,600.11-387,070.44-138,356.25

Finding the Fourth Proportional to 258,600.11, 387,070.44 and 138,356.25

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Solution

The fourth proportional to 258,600.11, 387,070.44 and 138,356.25 is: 207,090.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,600.11 : 387,070.44 = 138,356.25 : x
  2. Step 2: Convert to fraction form
    258,600.11/387,070.44 = 138,356.25/x
  3. Step 3: Cross multiply
    258,600.11x = 387,070.44 × 138,356.25
  4. Step 4: Simplify right side
    258,600.11x = 53,553,614,564.25
  5. Step 5: Solve for x
    x = 53,553,614,564.25/258,600.11
  6. Step 6: Final answer
    x = 207,090.46

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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.