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Finding the Fourth Proportional to 322,803.60, 483,859.80 and 145,280.40

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Solution

The fourth proportional to 322,803.60, 483,859.80 and 145,280.40 is: 217,765.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,803.60 : 483,859.80 = 145,280.40 : x
  2. Step 2: Convert to fraction form
    322,803.60/483,859.80 = 145,280.40/x
  3. Step 3: Cross multiply
    322,803.60x = 483,859.80 × 145,280.40
  4. Step 4: Simplify right side
    322,803.60x = 70,295,345,287.92
  5. Step 5: Solve for x
    x = 70,295,345,287.92/322,803.60
  6. Step 6: Final answer
    x = 217,765.06

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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.