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Finding the Fourth Proportional to 489,021.20, 732,840.60 and 301,475.60

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Solution

The fourth proportional to 489,021.20, 732,840.60 and 301,475.60 is: 451,787.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,021.20 : 732,840.60 = 301,475.60 : x
  2. Step 2: Convert to fraction form
    489,021.20/732,840.60 = 301,475.60/x
  3. Step 3: Cross multiply
    489,021.20x = 732,840.60 × 301,475.60
  4. Step 4: Simplify right side
    489,021.20x = 220,933,559,589.36
  5. Step 5: Solve for x
    x = 220,933,559,589.36/489,021.20
  6. Step 6: Final answer
    x = 451,787.28

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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.