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Finding the Fourth Proportional to 440,458.48, 660,786.18 and 140,957.03

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Solution

The fourth proportional to 440,458.48, 660,786.18 and 140,957.03 is: 211,467.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,458.48 : 660,786.18 = 140,957.03 : x
  2. Step 2: Convert to fraction form
    440,458.48/660,786.18 = 140,957.03/x
  3. Step 3: Cross multiply
    440,458.48x = 660,786.18 × 140,957.03
  4. Step 4: Simplify right side
    440,458.48x = 93,142,457,397.85
  5. Step 5: Solve for x
    x = 93,142,457,397.85/440,458.48
  6. Step 6: Final answer
    x = 211,467.05

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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.