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Finding the Fourth Proportional to 426,359.92, 639,163.50 and 173,851.60

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Solution

The fourth proportional to 426,359.92, 639,163.50 and 173,851.60 is: 260,623.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,359.92 : 639,163.50 = 173,851.60 : x
  2. Step 2: Convert to fraction form
    426,359.92/639,163.50 = 173,851.60/x
  3. Step 3: Cross multiply
    426,359.92x = 639,163.50 × 173,851.60
  4. Step 4: Simplify right side
    426,359.92x = 111,119,597,136.60
  5. Step 5: Solve for x
    x = 111,119,597,136.60/426,359.92
  6. Step 6: Final answer
    x = 260,623.93

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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.