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Finding the Fourth Proportional to 383,648.48, 529,423.49 and 211,566.43

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Solution

The fourth proportional to 383,648.48, 529,423.49 and 211,566.43 is: 291,955.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,648.48 : 529,423.49 = 211,566.43 : x
  2. Step 2: Convert to fraction form
    383,648.48/529,423.49 = 211,566.43/x
  3. Step 3: Cross multiply
    383,648.48x = 529,423.49 × 211,566.43
  4. Step 4: Simplify right side
    383,648.48x = 112,008,238,928.14
  5. Step 5: Solve for x
    x = 112,008,238,928.14/383,648.48
  6. Step 6: Final answer
    x = 291,955.39

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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.