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Finding the Fourth Proportional to 328,150.77, 492,015.96 and 138,559.74

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Solution

The fourth proportional to 328,150.77, 492,015.96 and 138,559.74 is: 207,750.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,150.77 : 492,015.96 = 138,559.74 : x
  2. Step 2: Convert to fraction form
    328,150.77/492,015.96 = 138,559.74/x
  3. Step 3: Cross multiply
    328,150.77x = 492,015.96 × 138,559.74
  4. Step 4: Simplify right side
    328,150.77x = 68,173,603,493.45
  5. Step 5: Solve for x
    x = 68,173,603,493.45/328,150.77
  6. Step 6: Final answer
    x = 207,750.86

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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.