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Finding the Fourth Proportional to 282,055.87, 389,247.21 and 154,735.21

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Solution

The fourth proportional to 282,055.87, 389,247.21 and 154,735.21 is: 213,540.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,055.87 : 389,247.21 = 154,735.21 : x
  2. Step 2: Convert to fraction form
    282,055.87/389,247.21 = 154,735.21/x
  3. Step 3: Cross multiply
    282,055.87x = 389,247.21 × 154,735.21
  4. Step 4: Simplify right side
    282,055.87x = 60,230,246,061.35
  5. Step 5: Solve for x
    x = 60,230,246,061.35/282,055.87
  6. Step 6: Final answer
    x = 213,540.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.