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Finding the Fourth Proportional to 440,764.40, 661,243.80 and 141,258.80

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Solution

The fourth proportional to 440,764.40, 661,243.80 and 141,258.80 is: 211,919.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,764.40 : 661,243.80 = 141,258.80 : x
  2. Step 2: Convert to fraction form
    440,764.40/661,243.80 = 141,258.80/x
  3. Step 3: Cross multiply
    440,764.40x = 661,243.80 × 141,258.80
  4. Step 4: Simplify right side
    440,764.40x = 93,406,505,695.44
  5. Step 5: Solve for x
    x = 93,406,505,695.44/440,764.40
  6. Step 6: Final answer
    x = 211,919.35

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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.