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Finding the Fourth Proportional to 213,270.00, 319,904.08 and 86,882.05

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Solution

The fourth proportional to 213,270.00, 319,904.08 and 86,882.05 is: 130,322.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,270.00 : 319,904.08 = 86,882.05 : x
  2. Step 2: Convert to fraction form
    213,270.00/319,904.08 = 86,882.05/x
  3. Step 3: Cross multiply
    213,270.00x = 319,904.08 × 86,882.05
  4. Step 4: Simplify right side
    213,270.00x = 27,793,922,945.15
  5. Step 5: Solve for x
    x = 27,793,922,945.15/213,270.00
  6. Step 6: Final answer
    x = 130,322.71

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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.