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Finding the Fourth Proportional to 455,448.79, 682,425.44 and 155,765.87

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Solution

The fourth proportional to 455,448.79, 682,425.44 and 155,765.87 is: 233,393.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,448.79 : 682,425.44 = 155,765.87 : x
  2. Step 2: Convert to fraction form
    455,448.79/682,425.44 = 155,765.87/x
  3. Step 3: Cross multiply
    455,448.79x = 682,425.44 × 155,765.87
  4. Step 4: Simplify right side
    455,448.79x = 106,298,591,323.99
  5. Step 5: Solve for x
    x = 106,298,591,323.99/455,448.79
  6. Step 6: Final answer
    x = 233,393.07

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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.