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Finding the Fourth Proportional to 208,654.54, 313,006.32 and 66,450.04

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Solution

The fourth proportional to 208,654.54, 313,006.32 and 66,450.04 is: 99,682.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,654.54 : 313,006.32 = 66,450.04 : x
  2. Step 2: Convert to fraction form
    208,654.54/313,006.32 = 66,450.04/x
  3. Step 3: Cross multiply
    208,654.54x = 313,006.32 × 66,450.04
  4. Step 4: Simplify right side
    208,654.54x = 20,799,281,701.74
  5. Step 5: Solve for x
    x = 20,799,281,701.74/208,654.54
  6. Step 6: Final answer
    x = 99,682.86

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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.