Home / 642,161.34-963,288.18-221,431.14

Finding the Fourth Proportional to 642,161.34, 963,288.18 and 221,431.14

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Solution

The fourth proportional to 642,161.34, 963,288.18 and 221,431.14 is: 332,162.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,161.34 : 963,288.18 = 221,431.14 : x
  2. Step 2: Convert to fraction form
    642,161.34/963,288.18 = 221,431.14/x
  3. Step 3: Cross multiply
    642,161.34x = 963,288.18 × 221,431.14
  4. Step 4: Simplify right side
    642,161.34x = 213,301,999,845.93
  5. Step 5: Solve for x
    x = 213,301,999,845.93/642,161.34
  6. Step 6: Final answer
    x = 332,162.63

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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.