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Finding the Fourth Proportional to 321,128.88, 481,602.60 and 202,622.64

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Solution

The fourth proportional to 321,128.88, 481,602.60 and 202,622.64 is: 303,876.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,128.88 : 481,602.60 = 202,622.64 : x
  2. Step 2: Convert to fraction form
    321,128.88/481,602.60 = 202,622.64/x
  3. Step 3: Cross multiply
    321,128.88x = 481,602.60 × 202,622.64
  4. Step 4: Simplify right side
    321,128.88x = 97,583,590,242.86
  5. Step 5: Solve for x
    x = 97,583,590,242.86/321,128.88
  6. Step 6: Final answer
    x = 303,876.72

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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.