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Finding the Fourth Proportional to 455,000.40, 682,500.60 and 218,804.40

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Solution

The fourth proportional to 455,000.40, 682,500.60 and 218,804.40 is: 328,206.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,000.40 : 682,500.60 = 218,804.40 : x
  2. Step 2: Convert to fraction form
    455,000.40/682,500.60 = 218,804.40/x
  3. Step 3: Cross multiply
    455,000.40x = 682,500.60 × 218,804.40
  4. Step 4: Simplify right side
    455,000.40x = 149,334,134,282.64
  5. Step 5: Solve for x
    x = 149,334,134,282.64/455,000.40
  6. Step 6: Final answer
    x = 328,206.60

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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.