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Finding the Fourth Proportional to 374,178.80, 560,879.40 and 205,439.60

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Solution

The fourth proportional to 374,178.80, 560,879.40 and 205,439.60 is: 307,945.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,178.80 : 560,879.40 = 205,439.60 : x
  2. Step 2: Convert to fraction form
    374,178.80/560,879.40 = 205,439.60/x
  3. Step 3: Cross multiply
    374,178.80x = 560,879.40 × 205,439.60
  4. Step 4: Simplify right side
    374,178.80x = 115,226,839,584.24
  5. Step 5: Solve for x
    x = 115,226,839,584.24/374,178.80
  6. Step 6: Final answer
    x = 307,945.93

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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.