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Finding the Fourth Proportional to 287,396.34, 396,606.68 and 166,607.56

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Solution

The fourth proportional to 287,396.34, 396,606.68 and 166,607.56 is: 229,918.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,396.34 : 396,606.68 = 166,607.56 : x
  2. Step 2: Convert to fraction form
    287,396.34/396,606.68 = 166,607.56/x
  3. Step 3: Cross multiply
    287,396.34x = 396,606.68 × 166,607.56
  4. Step 4: Simplify right side
    287,396.34x = 66,077,671,234.50
  5. Step 5: Solve for x
    x = 66,077,671,234.50/287,396.34
  6. Step 6: Final answer
    x = 229,918.28

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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.