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Finding the Fourth Proportional to 287,951.96, 397,371.02 and 158,891.63

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Solution

The fourth proportional to 287,951.96, 397,371.02 and 158,891.63 is: 219,268.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,951.96 : 397,371.02 = 158,891.63 : x
  2. Step 2: Convert to fraction form
    287,951.96/397,371.02 = 158,891.63/x
  3. Step 3: Cross multiply
    287,951.96x = 397,371.02 × 158,891.63
  4. Step 4: Simplify right side
    287,951.96x = 63,138,926,301.25
  5. Step 5: Solve for x
    x = 63,138,926,301.25/287,951.96
  6. Step 6: Final answer
    x = 219,268.96

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1.5x scale

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.