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Finding the Fourth Proportional to 322,467.60, 483,701.40 and 85,834.20

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Solution

The fourth proportional to 322,467.60, 483,701.40 and 85,834.20 is: 128,751.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,467.60 : 483,701.40 = 85,834.20 : x
  2. Step 2: Convert to fraction form
    322,467.60/483,701.40 = 85,834.20/x
  3. Step 3: Cross multiply
    322,467.60x = 483,701.40 × 85,834.20
  4. Step 4: Simplify right side
    322,467.60x = 41,518,122,707.88
  5. Step 5: Solve for x
    x = 41,518,122,707.88/322,467.60
  6. Step 6: Final answer
    x = 128,751.30

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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.