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Finding the Fourth Proportional to 285,606.20, 428,117.70 and 167,216.60

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Solution

The fourth proportional to 285,606.20, 428,117.70 and 167,216.60 is: 250,654.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,606.20 : 428,117.70 = 167,216.60 : x
  2. Step 2: Convert to fraction form
    285,606.20/428,117.70 = 167,216.60/x
  3. Step 3: Cross multiply
    285,606.20x = 428,117.70 × 167,216.60
  4. Step 4: Simplify right side
    285,606.20x = 71,588,386,193.82
  5. Step 5: Solve for x
    x = 71,588,386,193.82/285,606.20
  6. Step 6: Final answer
    x = 250,654.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.