Home / 281,575.35-388,578.38-154,242.54

Finding the Fourth Proportional to 281,575.35, 388,578.38 and 154,242.54

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Solution

The fourth proportional to 281,575.35, 388,578.38 and 154,242.54 is: 212,857.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,575.35 : 388,578.38 = 154,242.54 : x
  2. Step 2: Convert to fraction form
    281,575.35/388,578.38 = 154,242.54/x
  3. Step 3: Cross multiply
    281,575.35x = 388,578.38 × 154,242.54
  4. Step 4: Simplify right side
    281,575.35x = 59,935,316,320.29
  5. Step 5: Solve for x
    x = 59,935,316,320.29/281,575.35
  6. Step 6: Final answer
    x = 212,857.11

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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.