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Finding the Fourth Proportional to 447,502.81, 671,151.64 and 127,648.59

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Solution

The fourth proportional to 447,502.81, 671,151.64 and 127,648.59 is: 191,443.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,502.81 : 671,151.64 = 127,648.59 : x
  2. Step 2: Convert to fraction form
    447,502.81/671,151.64 = 127,648.59/x
  3. Step 3: Cross multiply
    447,502.81x = 671,151.64 × 127,648.59
  4. Step 4: Simplify right side
    447,502.81x = 85,671,560,522.19
  5. Step 5: Solve for x
    x = 85,671,560,522.19/447,502.81
  6. Step 6: Final answer
    x = 191,443.63

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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.