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Finding the Fourth Proportional to 455,242.80, 682,864.20 and 245,290.80

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Solution

The fourth proportional to 455,242.80, 682,864.20 and 245,290.80 is: 367,936.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,242.80 : 682,864.20 = 245,290.80 : x
  2. Step 2: Convert to fraction form
    455,242.80/682,864.20 = 245,290.80/x
  3. Step 3: Cross multiply
    455,242.80x = 682,864.20 × 245,290.80
  4. Step 4: Simplify right side
    455,242.80x = 167,500,305,909.36
  5. Step 5: Solve for x
    x = 167,500,305,909.36/455,242.80
  6. Step 6: Final answer
    x = 367,936.20

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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.