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Finding the Fourth Proportional to 282,059.87, 389,252.75 and 154,739.21

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Solution

The fourth proportional to 282,059.87, 389,252.75 and 154,739.21 is: 213,545.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,059.87 : 389,252.75 = 154,739.21 : x
  2. Step 2: Convert to fraction form
    282,059.87/389,252.75 = 154,739.21/x
  3. Step 3: Cross multiply
    282,059.87x = 389,252.75 × 154,739.21
  4. Step 4: Simplify right side
    282,059.87x = 60,232,660,305.37
  5. Step 5: Solve for x
    x = 60,232,660,305.37/282,059.87
  6. Step 6: Final answer
    x = 213,545.66

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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.