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Finding the Fourth Proportional to 281,371.22, 388,329.27 and 160,484.80

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Solution

The fourth proportional to 281,371.22, 388,329.27 and 160,484.80 is: 221,490.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,371.22 : 388,329.27 = 160,484.80 : x
  2. Step 2: Convert to fraction form
    281,371.22/388,329.27 = 160,484.80/x
  3. Step 3: Cross multiply
    281,371.22x = 388,329.27 × 160,484.80
  4. Step 4: Simplify right side
    281,371.22x = 62,320,942,486.03
  5. Step 5: Solve for x
    x = 62,320,942,486.03/281,371.22
  6. Step 6: Final answer
    x = 221,490.11

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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.