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Finding the Fourth Proportional to 443,838.24, 665,762.22 and 128,297.88

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Solution

The fourth proportional to 443,838.24, 665,762.22 and 128,297.88 is: 192,448.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,838.24 : 665,762.22 = 128,297.88 : x
  2. Step 2: Convert to fraction form
    443,838.24/665,762.22 = 128,297.88/x
  3. Step 3: Cross multiply
    443,838.24x = 665,762.22 × 128,297.88
  4. Step 4: Simplify right side
    443,838.24x = 85,415,881,410.09
  5. Step 5: Solve for x
    x = 85,415,881,410.09/443,838.24
  6. Step 6: Final answer
    x = 192,448.22

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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.