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Finding the Fourth Proportional to 447,507.69, 671,158.99 and 127,653.49

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Solution

The fourth proportional to 447,507.69, 671,158.99 and 127,653.49 is: 191,450.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,507.69 : 671,158.99 = 127,653.49 : x
  2. Step 2: Convert to fraction form
    447,507.69/671,158.99 = 127,653.49/x
  3. Step 3: Cross multiply
    447,507.69x = 671,158.99 × 127,653.49
  4. Step 4: Simplify right side
    447,507.69x = 85,675,787,418.38
  5. Step 5: Solve for x
    x = 85,675,787,418.38/447,507.69
  6. Step 6: Final answer
    x = 191,450.98

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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.