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Finding the Fourth Proportional to 611,942.60, 917,954.40 and 162,657.20

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Solution

The fourth proportional to 611,942.60, 917,954.40 and 162,657.20 is: 243,996.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,942.60 : 917,954.40 = 162,657.20 : x
  2. Step 2: Convert to fraction form
    611,942.60/917,954.40 = 162,657.20/x
  3. Step 3: Cross multiply
    611,942.60x = 917,954.40 × 162,657.20
  4. Step 4: Simplify right side
    611,942.60x = 149,311,892,431.68
  5. Step 5: Solve for x
    x = 149,311,892,431.68/611,942.60
  6. Step 6: Final answer
    x = 243,996.57

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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.