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Finding the Fourth Proportional to 455,057.40, 682,521.30 and 155,551.80

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Solution

The fourth proportional to 455,057.40, 682,521.30 and 155,551.80 is: 233,305.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,057.40 : 682,521.30 = 155,551.80 : x
  2. Step 2: Convert to fraction form
    455,057.40/682,521.30 = 155,551.80/x
  3. Step 3: Cross multiply
    455,057.40x = 682,521.30 × 155,551.80
  4. Step 4: Simplify right side
    455,057.40x = 106,167,416,753.34
  5. Step 5: Solve for x
    x = 106,167,416,753.34/455,057.40
  6. Step 6: Final answer
    x = 233,305.55

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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.