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Finding the Fourth Proportional to 287,402.55, 396,615.62 and 166,613.86

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Solution

The fourth proportional to 287,402.55, 396,615.62 and 166,613.86 is: 229,927.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,402.55 : 396,615.62 = 166,613.86 : x
  2. Step 2: Convert to fraction form
    287,402.55/396,615.62 = 166,613.86/x
  3. Step 3: Cross multiply
    287,402.55x = 396,615.62 × 166,613.86
  4. Step 4: Simplify right side
    287,402.55x = 66,081,659,384.49
  5. Step 5: Solve for x
    x = 66,081,659,384.49/287,402.55
  6. Step 6: Final answer
    x = 229,927.19

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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.