Home / 280,771.35-421,031.88-81,044.25

Finding the Fourth Proportional to 280,771.35, 421,031.88 and 81,044.25

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Solution

The fourth proportional to 280,771.35, 421,031.88 and 81,044.25 is: 121,530.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,771.35 : 421,031.88 = 81,044.25 : x
  2. Step 2: Convert to fraction form
    280,771.35/421,031.88 = 81,044.25/x
  3. Step 3: Cross multiply
    280,771.35x = 421,031.88 × 81,044.25
  4. Step 4: Simplify right side
    280,771.35x = 34,122,212,940.69
  5. Step 5: Solve for x
    x = 34,122,212,940.69/280,771.35
  6. Step 6: Final answer
    x = 121,530.25

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1.5x scale

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.