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Finding the Fourth Proportional to 281,508.29, 388,509.36 and 160,667.87

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Solution

The fourth proportional to 281,508.29, 388,509.36 and 160,667.87 is: 221,737.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,508.29 : 388,509.36 = 160,667.87 : x
  2. Step 2: Convert to fraction form
    281,508.29/388,509.36 = 160,667.87/x
  3. Step 3: Cross multiply
    281,508.29x = 388,509.36 × 160,667.87
  4. Step 4: Simplify right side
    281,508.29x = 62,420,970,542.92
  5. Step 5: Solve for x
    x = 62,420,970,542.92/281,508.29
  6. Step 6: Final answer
    x = 221,737.60

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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.