Home / 386,467.20-579,558.24-133,682.40

Finding the Fourth Proportional to 386,467.20, 579,558.24 and 133,682.40

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Solution

The fourth proportional to 386,467.20, 579,558.24 and 133,682.40 is: 200,474.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,467.20 : 579,558.24 = 133,682.40 : x
  2. Step 2: Convert to fraction form
    386,467.20/579,558.24 = 133,682.40/x
  3. Step 3: Cross multiply
    386,467.20x = 579,558.24 × 133,682.40
  4. Step 4: Simplify right side
    386,467.20x = 77,476,736,462.98
  5. Step 5: Solve for x
    x = 77,476,736,462.98/386,467.20
  6. Step 6: Final answer
    x = 200,474.29

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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.