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Finding the Fourth Proportional to 519,028.63, 778,474.55 and 154,282.49

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Solution

The fourth proportional to 519,028.63, 778,474.55 and 154,282.49 is: 231,403.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,028.63 : 778,474.55 = 154,282.49 : x
  2. Step 2: Convert to fraction form
    519,028.63/778,474.55 = 154,282.49/x
  3. Step 3: Cross multiply
    519,028.63x = 778,474.55 × 154,282.49
  4. Step 4: Simplify right side
    519,028.63x = 120,104,990,520.40
  5. Step 5: Solve for x
    x = 120,104,990,520.40/519,028.63
  6. Step 6: Final answer
    x = 231,403.40

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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.