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Finding the Fourth Proportional to 455,280.30, 682,920.45 and 155,734.20

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Solution

The fourth proportional to 455,280.30, 682,920.45 and 155,734.20 is: 233,601.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,280.30 : 682,920.45 = 155,734.20 : x
  2. Step 2: Convert to fraction form
    455,280.30/682,920.45 = 155,734.20/x
  3. Step 3: Cross multiply
    455,280.30x = 682,920.45 × 155,734.20
  4. Step 4: Simplify right side
    455,280.30x = 106,354,069,944.39
  5. Step 5: Solve for x
    x = 106,354,069,944.39/455,280.30
  6. Step 6: Final answer
    x = 233,601.30

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1.5x scale

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.