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Finding the Fourth Proportional to 383,124.72, 528,691.40 and 211,037

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Solution

The fourth proportional to 383,124.72, 528,691.40 and 211,037 is: 291,219.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,124.72 : 528,691.40 = 211,037 : x
  2. Step 2: Convert to fraction form
    383,124.72/528,691.40 = 211,037/x
  3. Step 3: Cross multiply
    383,124.72x = 528,691.40 × 211,037
  4. Step 4: Simplify right side
    383,124.72x = 111,573,446,981.80
  5. Step 5: Solve for x
    x = 111,573,446,981.80/383,124.72
  6. Step 6: Final answer
    x = 291,219.65

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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.