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Finding the Fourth Proportional to 208,172.62, 312,383.52 and 191,232.94

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Solution

The fourth proportional to 208,172.62, 312,383.52 and 191,232.94 is: 286,963.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,172.62 : 312,383.52 = 191,232.94 : x
  2. Step 2: Convert to fraction form
    208,172.62/312,383.52 = 191,232.94/x
  3. Step 3: Cross multiply
    208,172.62x = 312,383.52 × 191,232.94
  4. Step 4: Simplify right side
    208,172.62x = 59,738,018,937.15
  5. Step 5: Solve for x
    x = 59,738,018,937.15/208,172.62
  6. Step 6: Final answer
    x = 286,963.86

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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.