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Finding the Fourth Proportional to 205,964.60, 308,946.90 and 65,737.40

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Solution

The fourth proportional to 205,964.60, 308,946.90 and 65,737.40 is: 98,606.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,964.60 : 308,946.90 = 65,737.40 : x
  2. Step 2: Convert to fraction form
    205,964.60/308,946.90 = 65,737.40/x
  3. Step 3: Cross multiply
    205,964.60x = 308,946.90 × 65,737.40
  4. Step 4: Simplify right side
    205,964.60x = 20,309,365,944.06
  5. Step 5: Solve for x
    x = 20,309,365,944.06/205,964.60
  6. Step 6: Final answer
    x = 98,606.10

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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.