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Finding the Fourth Proportional to 213,498.36, 320,289.82 and 112,344.67

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Solution

The fourth proportional to 213,498.36, 320,289.82 and 112,344.67 is: 168,539.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,498.36 : 320,289.82 = 112,344.67 : x
  2. Step 2: Convert to fraction form
    213,498.36/320,289.82 = 112,344.67/x
  3. Step 3: Cross multiply
    213,498.36x = 320,289.82 × 112,344.67
  4. Step 4: Simplify right side
    213,498.36x = 35,982,854,567.73
  5. Step 5: Solve for x
    x = 35,982,854,567.73/213,498.36
  6. Step 6: Final answer
    x = 168,539.26

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1.5x scale

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.