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Finding the Fourth Proportional to 285,699.43, 394,263.03 and 156,636.37

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Solution

The fourth proportional to 285,699.43, 394,263.03 and 156,636.37 is: 216,156.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,699.43 : 394,263.03 = 156,636.37 : x
  2. Step 2: Convert to fraction form
    285,699.43/394,263.03 = 156,636.37/x
  3. Step 3: Cross multiply
    285,699.43x = 394,263.03 × 156,636.37
  4. Step 4: Simplify right side
    285,699.43x = 61,755,929,844.40
  5. Step 5: Solve for x
    x = 61,755,929,844.40/285,699.43
  6. Step 6: Final answer
    x = 216,156.99

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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.