Home / 389,849.60-584,774.40-109,414.40

Finding the Fourth Proportional to 389,849.60, 584,774.40 and 109,414.40

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Solution

The fourth proportional to 389,849.60, 584,774.40 and 109,414.40 is: 164,121.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,849.60 : 584,774.40 = 109,414.40 : x
  2. Step 2: Convert to fraction form
    389,849.60/584,774.40 = 109,414.40/x
  3. Step 3: Cross multiply
    389,849.60x = 584,774.40 × 109,414.40
  4. Step 4: Simplify right side
    389,849.60x = 63,982,740,111.36
  5. Step 5: Solve for x
    x = 63,982,740,111.36/389,849.60
  6. Step 6: Final answer
    x = 164,121.60

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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.