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Finding the Fourth Proportional to 478,997.28, 661,007.52 and 264,157.20

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Solution

The fourth proportional to 478,997.28, 661,007.52 and 264,157.20 is: 364,532.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,997.28 : 661,007.52 = 264,157.20 : x
  2. Step 2: Convert to fraction form
    478,997.28/661,007.52 = 264,157.20/x
  3. Step 3: Cross multiply
    478,997.28x = 661,007.52 × 264,157.20
  4. Step 4: Simplify right side
    478,997.28x = 174,609,895,662.14
  5. Step 5: Solve for x
    x = 174,609,895,662.14/478,997.28
  6. Step 6: Final answer
    x = 364,532.12

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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.