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Finding the Fourth Proportional to 383,459.64, 529,151.06 and 211,370.08

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Solution

The fourth proportional to 383,459.64, 529,151.06 and 211,370.08 is: 291,677.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,459.64 : 529,151.06 = 211,370.08 : x
  2. Step 2: Convert to fraction form
    383,459.64/529,151.06 = 211,370.08/x
  3. Step 3: Cross multiply
    383,459.64x = 529,151.06 × 211,370.08
  4. Step 4: Simplify right side
    383,459.64x = 111,846,701,884.29
  5. Step 5: Solve for x
    x = 111,846,701,884.29/383,459.64
  6. Step 6: Final answer
    x = 291,677.90

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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.