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Finding the Fourth Proportional to 278,190.59, 383,903.21 and 150,866.18

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Solution

The fourth proportional to 278,190.59, 383,903.21 and 150,866.18 is: 208,195.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,190.59 : 383,903.21 = 150,866.18 : x
  2. Step 2: Convert to fraction form
    278,190.59/383,903.21 = 150,866.18/x
  3. Step 3: Cross multiply
    278,190.59x = 383,903.21 × 150,866.18
  4. Step 4: Simplify right side
    278,190.59x = 57,918,009,240.09
  5. Step 5: Solve for x
    x = 57,918,009,240.09/278,190.59
  6. Step 6: Final answer
    x = 208,195.43

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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.