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Finding the Fourth Proportional to 255,990.40, 384,157 and 106,230.84

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Solution

The fourth proportional to 255,990.40, 384,157 and 106,230.84 is: 159,417.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,990.40 : 384,157 = 106,230.84 : x
  2. Step 2: Convert to fraction form
    255,990.40/384,157 = 106,230.84/x
  3. Step 3: Cross multiply
    255,990.40x = 384,157 × 106,230.84
  4. Step 4: Simplify right side
    255,990.40x = 40,809,320,801.88
  5. Step 5: Solve for x
    x = 40,809,320,801.88/255,990.40
  6. Step 6: Final answer
    x = 159,417.39

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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.