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Finding the Fourth Proportional to 399,162.40, 598,826.80 and 133,005.60

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Solution

The fourth proportional to 399,162.40, 598,826.80 and 133,005.60 is: 199,536.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,162.40 : 598,826.80 = 133,005.60 : x
  2. Step 2: Convert to fraction form
    399,162.40/598,826.80 = 133,005.60/x
  3. Step 3: Cross multiply
    399,162.40x = 598,826.80 × 133,005.60
  4. Step 4: Simplify right side
    399,162.40x = 79,647,317,830.08
  5. Step 5: Solve for x
    x = 79,647,317,830.08/399,162.40
  6. Step 6: Final answer
    x = 199,536.12

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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.