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Finding the Fourth Proportional to 208,792.35, 313,084.71 and 66,618.99

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Solution

The fourth proportional to 208,792.35, 313,084.71 and 66,618.99 is: 99,895.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,792.35 : 313,084.71 = 66,618.99 : x
  2. Step 2: Convert to fraction form
    208,792.35/313,084.71 = 66,618.99/x
  3. Step 3: Cross multiply
    208,792.35x = 313,084.71 × 66,618.99
  4. Step 4: Simplify right side
    208,792.35x = 20,857,387,164.64
  5. Step 5: Solve for x
    x = 20,857,387,164.64/208,792.35
  6. Step 6: Final answer
    x = 99,895.36

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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.