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Finding the Fourth Proportional to 340,885.77, 511,328.64 and 104,228.43

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Solution

The fourth proportional to 340,885.77, 511,328.64 and 104,228.43 is: 156,342.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,885.77 : 511,328.64 = 104,228.43 : x
  2. Step 2: Convert to fraction form
    340,885.77/511,328.64 = 104,228.43/x
  3. Step 3: Cross multiply
    340,885.77x = 511,328.64 × 104,228.43
  4. Step 4: Simplify right side
    340,885.77x = 53,294,981,361.24
  5. Step 5: Solve for x
    x = 53,294,981,361.24/340,885.77
  6. Step 6: Final answer
    x = 156,342.64

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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.