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Finding the Fourth Proportional to 443,264.40, 664,216.20 and 330,415.20

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Solution

The fourth proportional to 443,264.40, 664,216.20 and 330,415.20 is: 495,115.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,264.40 : 664,216.20 = 330,415.20 : x
  2. Step 2: Convert to fraction form
    443,264.40/664,216.20 = 330,415.20/x
  3. Step 3: Cross multiply
    443,264.40x = 664,216.20 × 330,415.20
  4. Step 4: Simplify right side
    443,264.40x = 219,467,128,566.24
  5. Step 5: Solve for x
    x = 219,467,128,566.24/443,264.40
  6. Step 6: Final answer
    x = 495,115.62

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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.