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Finding the Fourth Proportional to 440,800.40, 661,200.60 and 108,376.40

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Solution

The fourth proportional to 440,800.40, 661,200.60 and 108,376.40 is: 162,564.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,800.40 : 661,200.60 = 108,376.40 : x
  2. Step 2: Convert to fraction form
    440,800.40/661,200.60 = 108,376.40/x
  3. Step 3: Cross multiply
    440,800.40x = 661,200.60 × 108,376.40
  4. Step 4: Simplify right side
    440,800.40x = 71,658,540,705.84
  5. Step 5: Solve for x
    x = 71,658,540,705.84/440,800.40
  6. Step 6: Final answer
    x = 162,564.60

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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.