Home / 280,974.40-421,625.62-112,575.40

Finding the Fourth Proportional to 280,974.40, 421,625.62 and 112,575.40

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Solution

The fourth proportional to 280,974.40, 421,625.62 and 112,575.40 is: 168,928.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,974.40 : 421,625.62 = 112,575.40 : x
  2. Step 2: Convert to fraction form
    280,974.40/421,625.62 = 112,575.40/x
  3. Step 3: Cross multiply
    280,974.40x = 421,625.62 × 112,575.40
  4. Step 4: Simplify right side
    280,974.40x = 47,464,672,821.75
  5. Step 5: Solve for x
    x = 47,464,672,821.75/280,974.40
  6. Step 6: Final answer
    x = 168,928.82

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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.