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Finding the Fourth Proportional to 281,618, 388,537.16 and 160,672.40

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Solution

The fourth proportional to 281,618, 388,537.16 and 160,672.40 is: 221,673.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,618 : 388,537.16 = 160,672.40 : x
  2. Step 2: Convert to fraction form
    281,618/388,537.16 = 160,672.40/x
  3. Step 3: Cross multiply
    281,618x = 388,537.16 × 160,672.40
  4. Step 4: Simplify right side
    281,618x = 62,427,197,986.38
  5. Step 5: Solve for x
    x = 62,427,197,986.38/281,618
  6. Step 6: Final answer
    x = 221,673.32

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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.