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Finding the Fourth Proportional to 561,427.26, 842,170.05 and 280,849.74

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Solution

The fourth proportional to 561,427.26, 842,170.05 and 280,849.74 is: 421,289.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,427.26 : 842,170.05 = 280,849.74 : x
  2. Step 2: Convert to fraction form
    561,427.26/842,170.05 = 280,849.74/x
  3. Step 3: Cross multiply
    561,427.26x = 842,170.05 × 280,849.74
  4. Step 4: Simplify right side
    561,427.26x = 236,523,239,578.29
  5. Step 5: Solve for x
    x = 236,523,239,578.29/561,427.26
  6. Step 6: Final answer
    x = 421,289.20

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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.