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Finding the Fourth Proportional to 383,635.28, 529,404.54 and 211,560.50

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Solution

The fourth proportional to 383,635.28, 529,404.54 and 211,560.50 is: 291,946.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,635.28 : 529,404.54 = 211,560.50 : x
  2. Step 2: Convert to fraction form
    383,635.28/529,404.54 = 211,560.50/x
  3. Step 3: Cross multiply
    383,635.28x = 529,404.54 × 211,560.50
  4. Step 4: Simplify right side
    383,635.28x = 112,001,089,184.67
  5. Step 5: Solve for x
    x = 112,001,089,184.67/383,635.28
  6. Step 6: Final answer
    x = 291,946.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.