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Finding the Fourth Proportional to 426,184.40, 639,276.60 and 177,352.40

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Solution

The fourth proportional to 426,184.40, 639,276.60 and 177,352.40 is: 266,028.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,184.40 : 639,276.60 = 177,352.40 : x
  2. Step 2: Convert to fraction form
    426,184.40/639,276.60 = 177,352.40/x
  3. Step 3: Cross multiply
    426,184.40x = 639,276.60 × 177,352.40
  4. Step 4: Simplify right side
    426,184.40x = 113,377,239,273.84
  5. Step 5: Solve for x
    x = 113,377,239,273.84/426,184.40
  6. Step 6: Final answer
    x = 266,028.60

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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.