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Finding the Fourth Proportional to 408,730.60, 612,950.10 and 168,743.80

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Solution

The fourth proportional to 408,730.60, 612,950.10 and 168,743.80 is: 253,055.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,730.60 : 612,950.10 = 168,743.80 : x
  2. Step 2: Convert to fraction form
    408,730.60/612,950.10 = 168,743.80/x
  3. Step 3: Cross multiply
    408,730.60x = 612,950.10 × 168,743.80
  4. Step 4: Simplify right side
    408,730.60x = 103,431,529,084.38
  5. Step 5: Solve for x
    x = 103,431,529,084.38/408,730.60
  6. Step 6: Final answer
    x = 253,055.51

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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.