Home / 280,676.98-421,043.55-81,002.26

Finding the Fourth Proportional to 280,676.98, 421,043.55 and 81,002.26

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Solution

The fourth proportional to 280,676.98, 421,043.55 and 81,002.26 is: 121,511.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,676.98 : 421,043.55 = 81,002.26 : x
  2. Step 2: Convert to fraction form
    280,676.98/421,043.55 = 81,002.26/x
  3. Step 3: Cross multiply
    280,676.98x = 421,043.55 × 81,002.26
  4. Step 4: Simplify right side
    280,676.98x = 34,105,479,108.42
  5. Step 5: Solve for x
    x = 34,105,479,108.42/280,676.98
  6. Step 6: Final answer
    x = 121,511.49

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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.