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Finding the Fourth Proportional to 285,429.50, 393,892.74 and 158,113.34

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Solution

The fourth proportional to 285,429.50, 393,892.74 and 158,113.34 is: 218,196.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,429.50 : 393,892.74 = 158,113.34 : x
  2. Step 2: Convert to fraction form
    285,429.50/393,892.74 = 158,113.34/x
  3. Step 3: Cross multiply
    285,429.50x = 393,892.74 × 158,113.34
  4. Step 4: Simplify right side
    285,429.50x = 62,279,696,723.15
  5. Step 5: Solve for x
    x = 62,279,696,723.15/285,429.50
  6. Step 6: Final answer
    x = 218,196.43

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.