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Finding the Fourth Proportional to 282,122.57, 389,335.94 and 154,798.06

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Solution

The fourth proportional to 282,122.57, 389,335.94 and 154,798.06 is: 213,625.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,122.57 : 389,335.94 = 154,798.06 : x
  2. Step 2: Convert to fraction form
    282,122.57/389,335.94 = 154,798.06/x
  3. Step 3: Cross multiply
    282,122.57x = 389,335.94 × 154,798.06
  4. Step 4: Simplify right side
    282,122.57x = 60,268,448,200.28
  5. Step 5: Solve for x
    x = 60,268,448,200.28/282,122.57
  6. Step 6: Final answer
    x = 213,625.05

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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.