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Finding the Fourth Proportional to 443,745, 665,617.50 and 148,257

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Solution

The fourth proportional to 443,745, 665,617.50 and 148,257 is: 222,385.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,745 : 665,617.50 = 148,257 : x
  2. Step 2: Convert to fraction form
    443,745/665,617.50 = 148,257/x
  3. Step 3: Cross multiply
    443,745x = 665,617.50 × 148,257
  4. Step 4: Simplify right side
    443,745x = 98,682,453,697.50
  5. Step 5: Solve for x
    x = 98,682,453,697.50/443,745
  6. Step 6: Final answer
    x = 222,385.50

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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.