Home / 258,055.09-386,983.91-84,906.50

Finding the Fourth Proportional to 258,055.09, 386,983.91 and 84,906.50

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Solution

The fourth proportional to 258,055.09, 386,983.91 and 84,906.50 is: 127,327.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,055.09 : 386,983.91 = 84,906.50 : x
  2. Step 2: Convert to fraction form
    258,055.09/386,983.91 = 84,906.50/x
  3. Step 3: Cross multiply
    258,055.09x = 386,983.91 × 84,906.50
  4. Step 4: Simplify right side
    258,055.09x = 32,857,446,994.96
  5. Step 5: Solve for x
    x = 32,857,446,994.96/258,055.09
  6. Step 6: Final answer
    x = 127,327.26

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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.