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Finding the Fourth Proportional to 486,722.80, 729,954.60 and 149,762.80

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Solution

The fourth proportional to 486,722.80, 729,954.60 and 149,762.80 is: 224,604.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,722.80 : 729,954.60 = 149,762.80 : x
  2. Step 2: Convert to fraction form
    486,722.80/729,954.60 = 149,762.80/x
  3. Step 3: Cross multiply
    486,722.80x = 729,954.60 × 149,762.80
  4. Step 4: Simplify right side
    486,722.80x = 109,320,044,768.88
  5. Step 5: Solve for x
    x = 109,320,044,768.88/486,722.80
  6. Step 6: Final answer
    x = 224,604.32

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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.