Home / 215,039.49-322,357.65-72,785.22

Finding the Fourth Proportional to 215,039.49, 322,357.65 and 72,785.22

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Solution

The fourth proportional to 215,039.49, 322,357.65 and 72,785.22 is: 109,109.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,039.49 : 322,357.65 = 72,785.22 : x
  2. Step 2: Convert to fraction form
    215,039.49/322,357.65 = 72,785.22/x
  3. Step 3: Cross multiply
    215,039.49x = 322,357.65 × 72,785.22
  4. Step 4: Simplify right side
    215,039.49x = 23,462,872,473.93
  5. Step 5: Solve for x
    x = 23,462,872,473.93/215,039.49
  6. Step 6: Final answer
    x = 109,109.60

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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.