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Finding the Fourth Proportional to 443,820.10, 665,730.15 and 372,961.30

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Solution

The fourth proportional to 443,820.10, 665,730.15 and 372,961.30 is: 559,441.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,820.10 : 665,730.15 = 372,961.30 : x
  2. Step 2: Convert to fraction form
    443,820.10/665,730.15 = 372,961.30/x
  3. Step 3: Cross multiply
    443,820.10x = 665,730.15 × 372,961.30
  4. Step 4: Simplify right side
    443,820.10x = 248,291,582,193.20
  5. Step 5: Solve for x
    x = 248,291,582,193.20/443,820.10
  6. Step 6: Final answer
    x = 559,441.95

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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.