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Finding the Fourth Proportional to 322,353.40, 483,527.58 and 85,712.80

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Solution

The fourth proportional to 322,353.40, 483,527.58 and 85,712.80 is: 128,568.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,353.40 : 483,527.58 = 85,712.80 : x
  2. Step 2: Convert to fraction form
    322,353.40/483,527.58 = 85,712.80/x
  3. Step 3: Cross multiply
    322,353.40x = 483,527.58 × 85,712.80
  4. Step 4: Simplify right side
    322,353.40x = 41,444,502,759.02
  5. Step 5: Solve for x
    x = 41,444,502,759.02/322,353.40
  6. Step 6: Final answer
    x = 128,568.53

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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.