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Finding the Fourth Proportional to 215,291.53, 322,642.05 and 136,264.69

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Solution

The fourth proportional to 215,291.53, 322,642.05 and 136,264.69 is: 204,210.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,291.53 : 322,642.05 = 136,264.69 : x
  2. Step 2: Convert to fraction form
    215,291.53/322,642.05 = 136,264.69/x
  3. Step 3: Cross multiply
    215,291.53x = 322,642.05 × 136,264.69
  4. Step 4: Simplify right side
    215,291.53x = 43,964,718,924.21
  5. Step 5: Solve for x
    x = 43,964,718,924.21/215,291.53
  6. Step 6: Final answer
    x = 204,210.17

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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.