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Finding the Fourth Proportional to 447,608.64, 671,435.27 and 127,807.95

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Solution

The fourth proportional to 447,608.64, 671,435.27 and 127,807.95 is: 191,718.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,608.64 : 671,435.27 = 127,807.95 : x
  2. Step 2: Convert to fraction form
    447,608.64/671,435.27 = 127,807.95/x
  3. Step 3: Cross multiply
    447,608.64x = 671,435.27 × 127,807.95
  4. Step 4: Simplify right side
    447,608.64x = 85,814,765,735.92
  5. Step 5: Solve for x
    x = 85,814,765,735.92/447,608.64
  6. Step 6: Final answer
    x = 191,718.30

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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.