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Finding the Fourth Proportional to 281,508.03, 388,509 and 160,667.62

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Solution

The fourth proportional to 281,508.03, 388,509 and 160,667.62 is: 221,737.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,508.03 : 388,509 = 160,667.62 : x
  2. Step 2: Convert to fraction form
    281,508.03/388,509 = 160,667.62/x
  3. Step 3: Cross multiply
    281,508.03x = 388,509 × 160,667.62
  4. Step 4: Simplify right side
    281,508.03x = 62,420,816,378.58
  5. Step 5: Solve for x
    x = 62,420,816,378.58/281,508.03
  6. Step 6: Final answer
    x = 221,737.25

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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.