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Finding the Fourth Proportional to 447,609.64, 671,436.77 and 127,808.95

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Solution

The fourth proportional to 447,609.64, 671,436.77 and 127,808.95 is: 191,719.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,609.64 : 671,436.77 = 127,808.95 : x
  2. Step 2: Convert to fraction form
    447,609.64/671,436.77 = 127,808.95/x
  3. Step 3: Cross multiply
    447,609.64x = 671,436.77 × 127,808.95
  4. Step 4: Simplify right side
    447,609.64x = 85,815,628,565.09
  5. Step 5: Solve for x
    x = 85,815,628,565.09/447,609.64
  6. Step 6: Final answer
    x = 191,719.80

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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.