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Finding the Fourth Proportional to 431,764.80, 646,772.40 and 244,557.60

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Solution

The fourth proportional to 431,764.80, 646,772.40 and 244,557.60 is: 366,340.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,764.80 : 646,772.40 = 244,557.60 : x
  2. Step 2: Convert to fraction form
    431,764.80/646,772.40 = 244,557.60/x
  3. Step 3: Cross multiply
    431,764.80x = 646,772.40 × 244,557.60
  4. Step 4: Simplify right side
    431,764.80x = 158,173,105,890.24
  5. Step 5: Solve for x
    x = 158,173,105,890.24/431,764.80
  6. Step 6: Final answer
    x = 366,340.90

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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.