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Finding the Fourth Proportional to 421,092.10, 631,690.57 and 164,891.60

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Solution

The fourth proportional to 421,092.10, 631,690.57 and 164,891.60 is: 247,357.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,092.10 : 631,690.57 = 164,891.60 : x
  2. Step 2: Convert to fraction form
    421,092.10/631,690.57 = 164,891.60/x
  3. Step 3: Cross multiply
    421,092.10x = 631,690.57 × 164,891.60
  4. Step 4: Simplify right side
    421,092.10x = 104,160,468,208.71
  5. Step 5: Solve for x
    x = 104,160,468,208.71/421,092.10
  6. Step 6: Final answer
    x = 247,357.92

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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.