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Finding the Fourth Proportional to 281,507.78, 388,508.66 and 160,667.37

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Solution

The fourth proportional to 281,507.78, 388,508.66 and 160,667.37 is: 221,736.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,507.78 : 388,508.66 = 160,667.37 : x
  2. Step 2: Convert to fraction form
    281,507.78/388,508.66 = 160,667.37/x
  3. Step 3: Cross multiply
    281,507.78x = 388,508.66 × 160,667.37
  4. Step 4: Simplify right side
    281,507.78x = 62,420,665,026.09
  5. Step 5: Solve for x
    x = 62,420,665,026.09/281,507.78
  6. Step 6: Final answer
    x = 221,736.91

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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.