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Finding the Fourth Proportional to 383,402.67, 529,093.31 and 208,972.68

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Solution

The fourth proportional to 383,402.67, 529,093.31 and 208,972.68 is: 288,381.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,402.67 : 529,093.31 = 208,972.68 : x
  2. Step 2: Convert to fraction form
    383,402.67/529,093.31 = 208,972.68/x
  3. Step 3: Cross multiply
    383,402.67x = 529,093.31 × 208,972.68
  4. Step 4: Simplify right side
    383,402.67x = 110,566,045,915.91
  5. Step 5: Solve for x
    x = 110,566,045,915.91/383,402.67
  6. Step 6: Final answer
    x = 288,381.00

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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.