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Finding the Fourth Proportional to 400,929.21, 601,268.06 and 130,995.83

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Solution

The fourth proportional to 400,929.21, 601,268.06 and 130,995.83 is: 196,452.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,929.21 : 601,268.06 = 130,995.83 : x
  2. Step 2: Convert to fraction form
    400,929.21/601,268.06 = 130,995.83/x
  3. Step 3: Cross multiply
    400,929.21x = 601,268.06 × 130,995.83
  4. Step 4: Simplify right side
    400,929.21x = 78,763,610,402.85
  5. Step 5: Solve for x
    x = 78,763,610,402.85/400,929.21
  6. Step 6: Final answer
    x = 196,452.66

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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.