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Finding the Fourth Proportional to 555,495.20, 766,579.56 and 300,840.56

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Solution

The fourth proportional to 555,495.20, 766,579.56 and 300,840.56 is: 415,157.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,495.20 : 766,579.56 = 300,840.56 : x
  2. Step 2: Convert to fraction form
    555,495.20/766,579.56 = 300,840.56/x
  3. Step 3: Cross multiply
    555,495.20x = 766,579.56 × 300,840.56
  4. Step 4: Simplify right side
    555,495.20x = 230,618,224,114.95
  5. Step 5: Solve for x
    x = 230,618,224,114.95/555,495.20
  6. Step 6: Final answer
    x = 415,157.91

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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.