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Finding the Fourth Proportional to 518,587, 777,880.50 and 168,379

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Solution

The fourth proportional to 518,587, 777,880.50 and 168,379 is: 252,568.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,587 : 777,880.50 = 168,379 : x
  2. Step 2: Convert to fraction form
    518,587/777,880.50 = 168,379/x
  3. Step 3: Cross multiply
    518,587x = 777,880.50 × 168,379
  4. Step 4: Simplify right side
    518,587x = 130,978,740,709.50
  5. Step 5: Solve for x
    x = 130,978,740,709.50/518,587
  6. Step 6: Final answer
    x = 252,568.50

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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.