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Finding the Fourth Proportional to 486,981.25, 730,544.54 and 149,993.69

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Solution

The fourth proportional to 486,981.25, 730,544.54 and 149,993.69 is: 225,012.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,981.25 : 730,544.54 = 149,993.69 : x
  2. Step 2: Convert to fraction form
    486,981.25/730,544.54 = 149,993.69/x
  3. Step 3: Cross multiply
    486,981.25x = 730,544.54 × 149,993.69
  4. Step 4: Simplify right side
    486,981.25x = 109,577,068,679.57
  5. Step 5: Solve for x
    x = 109,577,068,679.57/486,981.25
  6. Step 6: Final answer
    x = 225,012.91

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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.