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Finding the Fourth Proportional to 278,352.94, 384,131.53 and 151,028.54

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Solution

The fourth proportional to 278,352.94, 384,131.53 and 151,028.54 is: 208,421.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,352.94 : 384,131.53 = 151,028.54 : x
  2. Step 2: Convert to fraction form
    278,352.94/384,131.53 = 151,028.54/x
  3. Step 3: Cross multiply
    278,352.94x = 384,131.53 × 151,028.54
  4. Step 4: Simplify right side
    278,352.94x = 58,014,824,143.87
  5. Step 5: Solve for x
    x = 58,014,824,143.87/278,352.94
  6. Step 6: Final answer
    x = 208,421.81

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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.