Home / 280,659.23-421,304.33-112,298.33

Finding the Fourth Proportional to 280,659.23, 421,304.33 and 112,298.33

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Solution

The fourth proportional to 280,659.23, 421,304.33 and 112,298.33 is: 168,573.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,659.23 : 421,304.33 = 112,298.33 : x
  2. Step 2: Convert to fraction form
    280,659.23/421,304.33 = 112,298.33/x
  3. Step 3: Cross multiply
    280,659.23x = 421,304.33 × 112,298.33
  4. Step 4: Simplify right side
    280,659.23x = 47,311,772,680.77
  5. Step 5: Solve for x
    x = 47,311,772,680.77/280,659.23
  6. Step 6: Final answer
    x = 168,573.73

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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.