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Finding the Fourth Proportional to 281,628.78, 388,632.86 and 160,765.26

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Solution

The fourth proportional to 281,628.78, 388,632.86 and 160,765.26 is: 221,847.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,628.78 : 388,632.86 = 160,765.26 : x
  2. Step 2: Convert to fraction form
    281,628.78/388,632.86 = 160,765.26/x
  3. Step 3: Cross multiply
    281,628.78x = 388,632.86 × 160,765.26
  4. Step 4: Simplify right side
    281,628.78x = 62,478,662,782.44
  5. Step 5: Solve for x
    x = 62,478,662,782.44/281,628.78
  6. Step 6: Final answer
    x = 221,847.58

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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.