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Finding the Fourth Proportional to 303,395.68, 418,529.64 and 188,630.80

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Solution

The fourth proportional to 303,395.68, 418,529.64 and 188,630.80 is: 260,213.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,395.68 : 418,529.64 = 188,630.80 : x
  2. Step 2: Convert to fraction form
    303,395.68/418,529.64 = 188,630.80/x
  3. Step 3: Cross multiply
    303,395.68x = 418,529.64 × 188,630.80
  4. Step 4: Simplify right side
    303,395.68x = 78,947,580,816.91
  5. Step 5: Solve for x
    x = 78,947,580,816.91/303,395.68
  6. Step 6: Final answer
    x = 260,213.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.