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Finding the Fourth Proportional to 281,481.92, 388,348.68 and 160,536.28

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Solution

The fourth proportional to 281,481.92, 388,348.68 and 160,536.28 is: 221,485.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,481.92 : 388,348.68 = 160,536.28 : x
  2. Step 2: Convert to fraction form
    281,481.92/388,348.68 = 160,536.28/x
  3. Step 3: Cross multiply
    281,481.92x = 388,348.68 × 160,536.28
  4. Step 4: Simplify right side
    281,481.92x = 62,344,052,430.11
  5. Step 5: Solve for x
    x = 62,344,052,430.11/281,481.92
  6. Step 6: Final answer
    x = 221,485.10

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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.