Home / 319,428.20-479,038.64-106,138.83

Finding the Fourth Proportional to 319,428.20, 479,038.64 and 106,138.83

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Solution

The fourth proportional to 319,428.20, 479,038.64 and 106,138.83 is: 159,173.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,428.20 : 479,038.64 = 106,138.83 : x
  2. Step 2: Convert to fraction form
    319,428.20/479,038.64 = 106,138.83/x
  3. Step 3: Cross multiply
    319,428.20x = 479,038.64 × 106,138.83
  4. Step 4: Simplify right side
    319,428.20x = 50,844,600,774.39
  5. Step 5: Solve for x
    x = 50,844,600,774.39/319,428.20
  6. Step 6: Final answer
    x = 159,173.80

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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.