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Finding the Fourth Proportional to 383,651.49, 529,427.64 and 211,569.42

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Solution

The fourth proportional to 383,651.49, 529,427.64 and 211,569.42 is: 291,959.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,651.49 : 529,427.64 = 211,569.42 : x
  2. Step 2: Convert to fraction form
    383,651.49/529,427.64 = 211,569.42/x
  3. Step 3: Cross multiply
    383,651.49x = 529,427.64 × 211,569.42
  4. Step 4: Simplify right side
    383,651.49x = 112,010,698,726.77
  5. Step 5: Solve for x
    x = 112,010,698,726.77/383,651.49
  6. Step 6: Final answer
    x = 291,959.50

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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.