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Finding the Fourth Proportional to 214,883.79, 322,465.54 and 81,765.15

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Solution

The fourth proportional to 214,883.79, 322,465.54 and 81,765.15 is: 122,700.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,883.79 : 322,465.54 = 81,765.15 : x
  2. Step 2: Convert to fraction form
    214,883.79/322,465.54 = 81,765.15/x
  3. Step 3: Cross multiply
    214,883.79x = 322,465.54 × 81,765.15
  4. Step 4: Simplify right side
    214,883.79x = 26,366,441,431.19
  5. Step 5: Solve for x
    x = 26,366,441,431.19/214,883.79
  6. Step 6: Final answer
    x = 122,700.94

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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.