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Finding the Fourth Proportional to 375,478.62, 563,212.77 and 91,171.35

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Solution

The fourth proportional to 375,478.62, 563,212.77 and 91,171.35 is: 136,755.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,478.62 : 563,212.77 = 91,171.35 : x
  2. Step 2: Convert to fraction form
    375,478.62/563,212.77 = 91,171.35/x
  3. Step 3: Cross multiply
    375,478.62x = 563,212.77 × 91,171.35
  4. Step 4: Simplify right side
    375,478.62x = 51,348,868,578.14
  5. Step 5: Solve for x
    x = 51,348,868,578.14/375,478.62
  6. Step 6: Final answer
    x = 136,755.77

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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.