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Finding the Fourth Proportional to 281,642.67, 388,682.45 and 160,822.77

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Solution

The fourth proportional to 281,642.67, 388,682.45 and 160,822.77 is: 221,944.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,642.67 : 388,682.45 = 160,822.77 : x
  2. Step 2: Convert to fraction form
    281,642.67/388,682.45 = 160,822.77/x
  3. Step 3: Cross multiply
    281,642.67x = 388,682.45 × 160,822.77
  4. Step 4: Simplify right side
    281,642.67x = 62,508,988,661.44
  5. Step 5: Solve for x
    x = 62,508,988,661.44/281,642.67
  6. Step 6: Final answer
    x = 221,944.31

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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.