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Finding the Fourth Proportional to 303,983.69, 455,975.73 and 79,343.55

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Solution

The fourth proportional to 303,983.69, 455,975.73 and 79,343.55 is: 119,015.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,983.69 : 455,975.73 = 79,343.55 : x
  2. Step 2: Convert to fraction form
    303,983.69/455,975.73 = 79,343.55/x
  3. Step 3: Cross multiply
    303,983.69x = 455,975.73 × 79,343.55
  4. Step 4: Simplify right side
    303,983.69x = 36,178,733,132.04
  5. Step 5: Solve for x
    x = 36,178,733,132.04/303,983.69
  6. Step 6: Final answer
    x = 119,015.38

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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.