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Finding the Fourth Proportional to 479,289.98, 661,424.64 and 264,428.12

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Solution

The fourth proportional to 479,289.98, 661,424.64 and 264,428.12 is: 364,913.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,289.98 : 661,424.64 = 264,428.12 : x
  2. Step 2: Convert to fraction form
    479,289.98/661,424.64 = 264,428.12/x
  3. Step 3: Cross multiply
    479,289.98x = 661,424.64 × 264,428.12
  4. Step 4: Simplify right side
    479,289.98x = 174,899,274,076.88
  5. Step 5: Solve for x
    x = 174,899,274,076.88/479,289.98
  6. Step 6: Final answer
    x = 364,913.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.