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Finding the Fourth Proportional to 282,350.46, 389,644.32 and 155,034.24

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Solution

The fourth proportional to 282,350.46, 389,644.32 and 155,034.24 is: 213,947.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,350.46 : 389,644.32 = 155,034.24 : x
  2. Step 2: Convert to fraction form
    282,350.46/389,644.32 = 155,034.24/x
  3. Step 3: Cross multiply
    282,350.46x = 389,644.32 × 155,034.24
  4. Step 4: Simplify right side
    282,350.46x = 60,408,211,021.52
  5. Step 5: Solve for x
    x = 60,408,211,021.52/282,350.46
  6. Step 6: Final answer
    x = 213,947.63

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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.