Home / 214,870.86-322,306.38-81,720.36

Finding the Fourth Proportional to 214,870.86, 322,306.38 and 81,720.36

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Solution

The fourth proportional to 214,870.86, 322,306.38 and 81,720.36 is: 122,580.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,870.86 : 322,306.38 = 81,720.36 : x
  2. Step 2: Convert to fraction form
    214,870.86/322,306.38 = 81,720.36/x
  3. Step 3: Cross multiply
    214,870.86x = 322,306.38 × 81,720.36
  4. Step 4: Simplify right side
    214,870.86x = 26,338,993,403.90
  5. Step 5: Solve for x
    x = 26,338,993,403.90/214,870.86
  6. Step 6: Final answer
    x = 122,580.57

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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.