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Finding the Fourth Proportional to 287,644.02, 396,937.89 and 166,790.40

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Solution

The fourth proportional to 287,644.02, 396,937.89 and 166,790.40 is: 230,164.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,644.02 : 396,937.89 = 166,790.40 : x
  2. Step 2: Convert to fraction form
    287,644.02/396,937.89 = 166,790.40/x
  3. Step 3: Cross multiply
    287,644.02x = 396,937.89 × 166,790.40
  4. Step 4: Simplify right side
    287,644.02x = 66,205,429,448.26
  5. Step 5: Solve for x
    x = 66,205,429,448.26/287,644.02
  6. Step 6: Final answer
    x = 230,164.46

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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.