Home / 281,643.18-388,667.82-154,318.77

Finding the Fourth Proportional to 281,643.18, 388,667.82 and 154,318.77

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Solution

The fourth proportional to 281,643.18, 388,667.82 and 154,318.77 is: 212,960.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,643.18 : 388,667.82 = 154,318.77 : x
  2. Step 2: Convert to fraction form
    281,643.18/388,667.82 = 154,318.77/x
  3. Step 3: Cross multiply
    281,643.18x = 388,667.82 × 154,318.77
  4. Step 4: Simplify right side
    281,643.18x = 59,978,739,631.63
  5. Step 5: Solve for x
    x = 59,978,739,631.63/281,643.18
  6. Step 6: Final answer
    x = 212,960.03

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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.