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Finding the Fourth Proportional to 445,329.80, 668,412.30 and 235,118.60

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Solution

The fourth proportional to 445,329.80, 668,412.30 and 235,118.60 is: 352,898.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,329.80 : 668,412.30 = 235,118.60 : x
  2. Step 2: Convert to fraction form
    445,329.80/668,412.30 = 235,118.60/x
  3. Step 3: Cross multiply
    445,329.80x = 668,412.30 × 235,118.60
  4. Step 4: Simplify right side
    445,329.80x = 157,156,164,198.78
  5. Step 5: Solve for x
    x = 157,156,164,198.78/445,329.80
  6. Step 6: Final answer
    x = 352,898.38

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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.