Home / 389,882.30-584,844.10-109,421.42

Finding the Fourth Proportional to 389,882.30, 584,844.10 and 109,421.42

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Solution

The fourth proportional to 389,882.30, 584,844.10 and 109,421.42 is: 164,137.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,882.30 : 584,844.10 = 109,421.42 : x
  2. Step 2: Convert to fraction form
    389,882.30/584,844.10 = 109,421.42/x
  3. Step 3: Cross multiply
    389,882.30x = 584,844.10 × 109,421.42
  4. Step 4: Simplify right side
    389,882.30x = 63,994,468,702.85
  5. Step 5: Solve for x
    x = 63,994,468,702.85/389,882.30
  6. Step 6: Final answer
    x = 164,137.92

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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.