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Finding the Fourth Proportional to 218,653.02, 328,074.83 and 76,600.20

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Solution

The fourth proportional to 218,653.02, 328,074.83 and 76,600.20 is: 114,933.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,653.02 : 328,074.83 = 76,600.20 : x
  2. Step 2: Convert to fraction form
    218,653.02/328,074.83 = 76,600.20/x
  3. Step 3: Cross multiply
    218,653.02x = 328,074.83 × 76,600.20
  4. Step 4: Simplify right side
    218,653.02x = 25,130,597,592.97
  5. Step 5: Solve for x
    x = 25,130,597,592.97/218,653.02
  6. Step 6: Final answer
    x = 114,933.69

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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.