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Finding the Fourth Proportional to 281,285.63, 388,177.82 and 153,958.49

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Solution

The fourth proportional to 281,285.63, 388,177.82 and 153,958.49 is: 212,464.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,285.63 : 388,177.82 = 153,958.49 : x
  2. Step 2: Convert to fraction form
    281,285.63/388,177.82 = 153,958.49/x
  3. Step 3: Cross multiply
    281,285.63x = 388,177.82 × 153,958.49
  4. Step 4: Simplify right side
    281,285.63x = 59,763,268,308.01
  5. Step 5: Solve for x
    x = 59,763,268,308.01/281,285.63
  6. Step 6: Final answer
    x = 212,464.71

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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.