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Finding the Fourth Proportional to 208,783.88, 312,772.72 and 124,611.24

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Solution

The fourth proportional to 208,783.88, 312,772.72 and 124,611.24 is: 186,676.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,783.88 : 312,772.72 = 124,611.24 : x
  2. Step 2: Convert to fraction form
    208,783.88/312,772.72 = 124,611.24/x
  3. Step 3: Cross multiply
    208,783.88x = 312,772.72 × 124,611.24
  4. Step 4: Simplify right side
    208,783.88x = 38,974,996,477.37
  5. Step 5: Solve for x
    x = 38,974,996,477.37/208,783.88
  6. Step 6: Final answer
    x = 186,676.27

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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.