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Finding the Fourth Proportional to 407,949.90, 611,924.85 and 108,476.70

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Solution

The fourth proportional to 407,949.90, 611,924.85 and 108,476.70 is: 162,715.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,949.90 : 611,924.85 = 108,476.70 : x
  2. Step 2: Convert to fraction form
    407,949.90/611,924.85 = 108,476.70/x
  3. Step 3: Cross multiply
    407,949.90x = 611,924.85 × 108,476.70
  4. Step 4: Simplify right side
    407,949.90x = 66,379,588,376.00
  5. Step 5: Solve for x
    x = 66,379,588,376.00/407,949.90
  6. Step 6: Final answer
    x = 162,715.05

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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.