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Finding the Fourth Proportional to 508,848.78, 763,361.16 and 171,891.90

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Solution

The fourth proportional to 508,848.78, 763,361.16 and 171,891.90 is: 257,867.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,848.78 : 763,361.16 = 171,891.90 : x
  2. Step 2: Convert to fraction form
    508,848.78/763,361.16 = 171,891.90/x
  3. Step 3: Cross multiply
    508,848.78x = 763,361.16 × 171,891.90
  4. Step 4: Simplify right side
    508,848.78x = 131,215,600,178.60
  5. Step 5: Solve for x
    x = 131,215,600,178.60/508,848.78
  6. Step 6: Final answer
    x = 257,867.57

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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.