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Finding the Fourth Proportional to 426,859.31, 640,314.02 and 160,622.13

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Solution

The fourth proportional to 426,859.31, 640,314.02 and 160,622.13 is: 240,942.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,859.31 : 640,314.02 = 160,622.13 : x
  2. Step 2: Convert to fraction form
    426,859.31/640,314.02 = 160,622.13/x
  3. Step 3: Cross multiply
    426,859.31x = 640,314.02 × 160,622.13
  4. Step 4: Simplify right side
    426,859.31x = 102,848,600,958.15
  5. Step 5: Solve for x
    x = 102,848,600,958.15/426,859.31
  6. Step 6: Final answer
    x = 240,942.62

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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.