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Finding the Fourth Proportional to 234,570.64, 323,699.60 and 139,020.60

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Solution

The fourth proportional to 234,570.64, 323,699.60 and 139,020.60 is: 191,843.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,570.64 : 323,699.60 = 139,020.60 : x
  2. Step 2: Convert to fraction form
    234,570.64/323,699.60 = 139,020.60/x
  3. Step 3: Cross multiply
    234,570.64x = 323,699.60 × 139,020.60
  4. Step 4: Simplify right side
    234,570.64x = 45,000,912,611.76
  5. Step 5: Solve for x
    x = 45,000,912,611.76/234,570.64
  6. Step 6: Final answer
    x = 191,843.76

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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.