Home / 215,009.09-322,389.01-72,806.90

Finding the Fourth Proportional to 215,009.09, 322,389.01 and 72,806.90

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Solution

The fourth proportional to 215,009.09, 322,389.01 and 72,806.90 is: 109,168.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,009.09 : 322,389.01 = 72,806.90 : x
  2. Step 2: Convert to fraction form
    215,009.09/322,389.01 = 72,806.90/x
  3. Step 3: Cross multiply
    215,009.09x = 322,389.01 × 72,806.90
  4. Step 4: Simplify right side
    215,009.09x = 23,472,144,412.17
  5. Step 5: Solve for x
    x = 23,472,144,412.17/215,009.09
  6. Step 6: Final answer
    x = 109,168.15

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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.