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Finding the Fourth Proportional to 426,803.67, 640,293.89 and 174,084.89

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Solution

The fourth proportional to 426,803.67, 640,293.89 and 174,084.89 is: 261,163.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,803.67 : 640,293.89 = 174,084.89 : x
  2. Step 2: Convert to fraction form
    426,803.67/640,293.89 = 174,084.89/x
  3. Step 3: Cross multiply
    426,803.67x = 640,293.89 × 174,084.89
  4. Step 4: Simplify right side
    426,803.67x = 111,465,487,336.43
  5. Step 5: Solve for x
    x = 111,465,487,336.43/426,803.67
  6. Step 6: Final answer
    x = 261,163.38

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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.