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Finding the Fourth Proportional to 208,817.18, 312,822.53 and 124,644.41

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Solution

The fourth proportional to 208,817.18, 312,822.53 and 124,644.41 is: 186,725.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,817.18 : 312,822.53 = 124,644.41 : x
  2. Step 2: Convert to fraction form
    208,817.18/312,822.53 = 124,644.41/x
  3. Step 3: Cross multiply
    208,817.18x = 312,822.53 × 124,644.41
  4. Step 4: Simplify right side
    208,817.18x = 38,991,577,499.22
  5. Step 5: Solve for x
    x = 38,991,577,499.22/208,817.18
  6. Step 6: Final answer
    x = 186,725.91

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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.