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Finding the Fourth Proportional to 296,843.10, 445,221.45 and 86,459.10

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Solution

The fourth proportional to 296,843.10, 445,221.45 and 86,459.10 is: 129,676.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,843.10 : 445,221.45 = 86,459.10 : x
  2. Step 2: Convert to fraction form
    296,843.10/445,221.45 = 86,459.10/x
  3. Step 3: Cross multiply
    296,843.10x = 445,221.45 × 86,459.10
  4. Step 4: Simplify right side
    296,843.10x = 38,493,445,867.70
  5. Step 5: Solve for x
    x = 38,493,445,867.70/296,843.10
  6. Step 6: Final answer
    x = 129,676.07

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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.