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Finding the Fourth Proportional to 289,883.06, 434,820.28 and 100,481.30

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Solution

The fourth proportional to 289,883.06, 434,820.28 and 100,481.30 is: 150,720.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,883.06 : 434,820.28 = 100,481.30 : x
  2. Step 2: Convert to fraction form
    289,883.06/434,820.28 = 100,481.30/x
  3. Step 3: Cross multiply
    289,883.06x = 434,820.28 × 100,481.30
  4. Step 4: Simplify right side
    289,883.06x = 43,691,307,000.76
  5. Step 5: Solve for x
    x = 43,691,307,000.76/289,883.06
  6. Step 6: Final answer
    x = 150,720.46

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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.