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Finding the Fourth Proportional to 611,151.60, 916,727.40 and 161,941.80

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Solution

The fourth proportional to 611,151.60, 916,727.40 and 161,941.80 is: 242,912.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,151.60 : 916,727.40 = 161,941.80 : x
  2. Step 2: Convert to fraction form
    611,151.60/916,727.40 = 161,941.80/x
  3. Step 3: Cross multiply
    611,151.60x = 916,727.40 × 161,941.80
  4. Step 4: Simplify right side
    611,151.60x = 148,456,485,265.32
  5. Step 5: Solve for x
    x = 148,456,485,265.32/611,151.60
  6. Step 6: Final answer
    x = 242,912.70

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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.