Home / 280,680.16-421,125-168,440.89

Finding the Fourth Proportional to 280,680.16, 421,125 and 168,440.89

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Solution

The fourth proportional to 280,680.16, 421,125 and 168,440.89 is: 252,724.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,680.16 : 421,125 = 168,440.89 : x
  2. Step 2: Convert to fraction form
    280,680.16/421,125 = 168,440.89/x
  3. Step 3: Cross multiply
    280,680.16x = 421,125 × 168,440.89
  4. Step 4: Simplify right side
    280,680.16x = 70,934,669,801.25
  5. Step 5: Solve for x
    x = 70,934,669,801.25/280,680.16
  6. Step 6: Final answer
    x = 252,724.20

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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.