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Finding the Fourth Proportional to 281,508.78, 388,510.04 and 160,668.37

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Solution

The fourth proportional to 281,508.78, 388,510.04 and 160,668.37 is: 221,738.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,508.78 : 388,510.04 = 160,668.37 : x
  2. Step 2: Convert to fraction form
    281,508.78/388,510.04 = 160,668.37/x
  3. Step 3: Cross multiply
    281,508.78x = 388,510.04 × 160,668.37
  4. Step 4: Simplify right side
    281,508.78x = 62,421,274,855.43
  5. Step 5: Solve for x
    x = 62,421,274,855.43/281,508.78
  6. Step 6: Final answer
    x = 221,738.29

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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.