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Finding the Fourth Proportional to 519,114.68, 778,672.74 and 145,137.32

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Solution

The fourth proportional to 519,114.68, 778,672.74 and 145,137.32 is: 217,706.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,114.68 : 778,672.74 = 145,137.32 : x
  2. Step 2: Convert to fraction form
    519,114.68/778,672.74 = 145,137.32/x
  3. Step 3: Cross multiply
    519,114.68x = 778,672.74 × 145,137.32
  4. Step 4: Simplify right side
    519,114.68x = 113,014,474,640.66
  5. Step 5: Solve for x
    x = 113,014,474,640.66/519,114.68
  6. Step 6: Final answer
    x = 217,706.18

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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.