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Finding the Fourth Proportional to 289,450.85, 399,443.31 and 162,126.45

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Solution

The fourth proportional to 289,450.85, 399,443.31 and 162,126.45 is: 223,735.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,450.85 : 399,443.31 = 162,126.45 : x
  2. Step 2: Convert to fraction form
    289,450.85/399,443.31 = 162,126.45/x
  3. Step 3: Cross multiply
    289,450.85x = 399,443.31 × 162,126.45
  4. Step 4: Simplify right side
    289,450.85x = 64,760,325,826.55
  5. Step 5: Solve for x
    x = 64,760,325,826.55/289,450.85
  6. Step 6: Final answer
    x = 223,735.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.