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Finding the Fourth Proportional to 287,730.79, 397,070.19 and 166,944.01

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Solution

The fourth proportional to 287,730.79, 397,070.19 and 166,944.01 is: 230,383.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,730.79 : 397,070.19 = 166,944.01 : x
  2. Step 2: Convert to fraction form
    287,730.79/397,070.19 = 166,944.01/x
  3. Step 3: Cross multiply
    287,730.79x = 397,070.19 × 166,944.01
  4. Step 4: Simplify right side
    287,730.79x = 66,288,489,770.06
  5. Step 5: Solve for x
    x = 66,288,489,770.06/287,730.79
  6. Step 6: Final answer
    x = 230,383.72

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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.