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Finding the Fourth Proportional to 288,936.45, 433,405.28 and 155,879.37

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Solution

The fourth proportional to 288,936.45, 433,405.28 and 155,879.37 is: 233,819.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,936.45 : 433,405.28 = 155,879.37 : x
  2. Step 2: Convert to fraction form
    288,936.45/433,405.28 = 155,879.37/x
  3. Step 3: Cross multiply
    288,936.45x = 433,405.28 × 155,879.37
  4. Step 4: Simplify right side
    288,936.45x = 67,558,942,390.77
  5. Step 5: Solve for x
    x = 67,558,942,390.77/288,936.45
  6. Step 6: Final answer
    x = 233,819.38

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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.