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Finding the Fourth Proportional to 478,553.28, 660,433.01 and 263,693.31

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Solution

The fourth proportional to 478,553.28, 660,433.01 and 263,693.31 is: 363,913.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,553.28 : 660,433.01 = 263,693.31 : x
  2. Step 2: Convert to fraction form
    478,553.28/660,433.01 = 263,693.31/x
  3. Step 3: Cross multiply
    478,553.28x = 660,433.01 × 263,693.31
  4. Step 4: Simplify right side
    478,553.28x = 174,151,765,121.70
  5. Step 5: Solve for x
    x = 174,151,765,121.70/478,553.28
  6. Step 6: Final answer
    x = 363,913.01

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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.