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Finding the Fourth Proportional to 455,274.80, 682,912.20 and 155,655.80

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Solution

The fourth proportional to 455,274.80, 682,912.20 and 155,655.80 is: 233,483.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,274.80 : 682,912.20 = 155,655.80 : x
  2. Step 2: Convert to fraction form
    455,274.80/682,912.20 = 155,655.80/x
  3. Step 3: Cross multiply
    455,274.80x = 682,912.20 × 155,655.80
  4. Step 4: Simplify right side
    455,274.80x = 106,299,244,820.76
  5. Step 5: Solve for x
    x = 106,299,244,820.76/455,274.80
  6. Step 6: Final answer
    x = 233,483.70

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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.