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Finding the Fourth Proportional to 440,458.76, 660,786.60 and 140,957.30

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Solution

The fourth proportional to 440,458.76, 660,786.60 and 140,957.30 is: 211,467.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,458.76 : 660,786.60 = 140,957.30 : x
  2. Step 2: Convert to fraction form
    440,458.76/660,786.60 = 140,957.30/x
  3. Step 3: Cross multiply
    440,458.76x = 660,786.60 × 140,957.30
  4. Step 4: Simplify right side
    440,458.76x = 93,142,695,012.18
  5. Step 5: Solve for x
    x = 93,142,695,012.18/440,458.76
  6. Step 6: Final answer
    x = 211,467.46

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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.