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Finding the Fourth Proportional to 443,605.40, 665,408.10 and 163,086.20

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Solution

The fourth proportional to 443,605.40, 665,408.10 and 163,086.20 is: 244,629.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,605.40 : 665,408.10 = 163,086.20 : x
  2. Step 2: Convert to fraction form
    443,605.40/665,408.10 = 163,086.20/x
  3. Step 3: Cross multiply
    443,605.40x = 665,408.10 × 163,086.20
  4. Step 4: Simplify right side
    443,605.40x = 108,518,878,478.22
  5. Step 5: Solve for x
    x = 108,518,878,478.22/443,605.40
  6. Step 6: Final answer
    x = 244,629.30

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1.5x scale

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.