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Finding the Fourth Proportional to 384,620.37, 530,773.20 and 212,549.94

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Solution

The fourth proportional to 384,620.37, 530,773.20 and 212,549.94 is: 293,317.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,620.37 : 530,773.20 = 212,549.94 : x
  2. Step 2: Convert to fraction form
    384,620.37/530,773.20 = 212,549.94/x
  3. Step 3: Cross multiply
    384,620.37x = 530,773.20 × 212,549.94
  4. Step 4: Simplify right side
    384,620.37x = 112,815,811,813.61
  5. Step 5: Solve for x
    x = 112,815,811,813.61/384,620.37
  6. Step 6: Final answer
    x = 293,317.31

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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.