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Finding the Fourth Proportional to 281,372.98, 388,331.68 and 160,486.54

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Solution

The fourth proportional to 281,372.98, 388,331.68 and 160,486.54 is: 221,492.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,372.98 : 388,331.68 = 160,486.54 : x
  2. Step 2: Convert to fraction form
    281,372.98/388,331.68 = 160,486.54/x
  3. Step 3: Cross multiply
    281,372.98x = 388,331.68 × 160,486.54
  4. Step 4: Simplify right side
    281,372.98x = 62,322,007,695.59
  5. Step 5: Solve for x
    x = 62,322,007,695.59/281,372.98
  6. Step 6: Final answer
    x = 221,492.51

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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.