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Finding the Fourth Proportional to 217,720.94, 326,602.07 and 84,611.48

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Solution

The fourth proportional to 217,720.94, 326,602.07 and 84,611.48 is: 126,925.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,720.94 : 326,602.07 = 84,611.48 : x
  2. Step 2: Convert to fraction form
    217,720.94/326,602.07 = 84,611.48/x
  3. Step 3: Cross multiply
    217,720.94x = 326,602.07 × 84,611.48
  4. Step 4: Simplify right side
    217,720.94x = 27,634,284,090.71
  5. Step 5: Solve for x
    x = 27,634,284,090.71/217,720.94
  6. Step 6: Final answer
    x = 126,925.25

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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.