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Finding the Fourth Proportional to 383,649.48, 529,424.87 and 211,567.43

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Solution

The fourth proportional to 383,649.48, 529,424.87 and 211,567.43 is: 291,956.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,649.48 : 529,424.87 = 211,567.43 : x
  2. Step 2: Convert to fraction form
    383,649.48/529,424.87 = 211,567.43/x
  3. Step 3: Cross multiply
    383,649.48x = 529,424.87 × 211,567.43
  4. Step 4: Simplify right side
    383,649.48x = 112,009,059,123.98
  5. Step 5: Solve for x
    x = 112,009,059,123.98/383,649.48
  6. Step 6: Final answer
    x = 291,956.76

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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.