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Finding the Fourth Proportional to 322,344.16, 483,515.73 and 85,686.86

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Solution

The fourth proportional to 322,344.16, 483,515.73 and 85,686.86 is: 128,530.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,344.16 : 483,515.73 = 85,686.86 : x
  2. Step 2: Convert to fraction form
    322,344.16/483,515.73 = 85,686.86/x
  3. Step 3: Cross multiply
    322,344.16x = 483,515.73 × 85,686.86
  4. Step 4: Simplify right side
    322,344.16x = 41,430,945,873.10
  5. Step 5: Solve for x
    x = 41,430,945,873.10/322,344.16
  6. Step 6: Final answer
    x = 128,530.16

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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.