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Finding the Fourth Proportional to 486,688.80, 729,903.60 and 149,728.80

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Solution

The fourth proportional to 486,688.80, 729,903.60 and 149,728.80 is: 224,553.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,688.80 : 729,903.60 = 149,728.80 : x
  2. Step 2: Convert to fraction form
    486,688.80/729,903.60 = 149,728.80/x
  3. Step 3: Cross multiply
    486,688.80x = 729,903.60 × 149,728.80
  4. Step 4: Simplify right side
    486,688.80x = 109,287,590,143.68
  5. Step 5: Solve for x
    x = 109,287,590,143.68/486,688.80
  6. Step 6: Final answer
    x = 224,553.33

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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.