Home / 285,799.05-428,787.81-172,071.54

Finding the Fourth Proportional to 285,799.05, 428,787.81 and 172,071.54

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Solution

The fourth proportional to 285,799.05, 428,787.81 and 172,071.54 is: 258,161.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,799.05 : 428,787.81 = 172,071.54 : x
  2. Step 2: Convert to fraction form
    285,799.05/428,787.81 = 172,071.54/x
  3. Step 3: Cross multiply
    285,799.05x = 428,787.81 × 172,071.54
  4. Step 4: Simplify right side
    285,799.05x = 73,782,178,799.93
  5. Step 5: Solve for x
    x = 73,782,178,799.93/285,799.05
  6. Step 6: Final answer
    x = 258,161.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.