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Finding the Fourth Proportional to 455,261.80, 682,892.70 and 155,642.80

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Solution

The fourth proportional to 455,261.80, 682,892.70 and 155,642.80 is: 233,464.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,261.80 : 682,892.70 = 155,642.80 : x
  2. Step 2: Convert to fraction form
    455,261.80/682,892.70 = 155,642.80/x
  3. Step 3: Cross multiply
    455,261.80x = 682,892.70 × 155,642.80
  4. Step 4: Simplify right side
    455,261.80x = 106,287,331,927.56
  5. Step 5: Solve for x
    x = 106,287,331,927.56/455,261.80
  6. Step 6: Final answer
    x = 233,464.20

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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.