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Finding the Fourth Proportional to 447,610.39, 671,437.90 and 127,809.70

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Solution

The fourth proportional to 447,610.39, 671,437.90 and 127,809.70 is: 191,720.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,610.39 : 671,437.90 = 127,809.70 : x
  2. Step 2: Convert to fraction form
    447,610.39/671,437.90 = 127,809.70/x
  3. Step 3: Cross multiply
    447,610.39x = 671,437.90 × 127,809.70
  4. Step 4: Simplify right side
    447,610.39x = 85,816,276,567.63
  5. Step 5: Solve for x
    x = 85,816,276,567.63/447,610.39
  6. Step 6: Final answer
    x = 191,720.92

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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.