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Finding the Fourth Proportional to 214,959.24, 322,437.90 and 81,808.20

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Solution

The fourth proportional to 214,959.24, 322,437.90 and 81,808.20 is: 122,711.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,959.24 : 322,437.90 = 81,808.20 : x
  2. Step 2: Convert to fraction form
    214,959.24/322,437.90 = 81,808.20/x
  3. Step 3: Cross multiply
    214,959.24x = 322,437.90 × 81,808.20
  4. Step 4: Simplify right side
    214,959.24x = 26,378,064,210.78
  5. Step 5: Solve for x
    x = 26,378,064,210.78/214,959.24
  6. Step 6: Final answer
    x = 122,711.93

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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.