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Finding the Fourth Proportional to 383,960.34, 529,864.86 and 211,878.27

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Solution

The fourth proportional to 383,960.34, 529,864.86 and 211,878.27 is: 292,391.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,960.34 : 529,864.86 = 211,878.27 : x
  2. Step 2: Convert to fraction form
    383,960.34/529,864.86 = 211,878.27/x
  3. Step 3: Cross multiply
    383,960.34x = 529,864.86 × 211,878.27
  4. Step 4: Simplify right side
    383,960.34x = 112,266,849,870.59
  5. Step 5: Solve for x
    x = 112,266,849,870.59/383,960.34
  6. Step 6: Final answer
    x = 292,391.79

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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.