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Finding the Fourth Proportional to 385,108.54, 577,440.46 and 118,797.55

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Solution

The fourth proportional to 385,108.54, 577,440.46 and 118,797.55 is: 178,127.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,108.54 : 577,440.46 = 118,797.55 : x
  2. Step 2: Convert to fraction form
    385,108.54/577,440.46 = 118,797.55/x
  3. Step 3: Cross multiply
    385,108.54x = 577,440.46 × 118,797.55
  4. Step 4: Simplify right side
    385,108.54x = 68,598,511,918.87
  5. Step 5: Solve for x
    x = 68,598,511,918.87/385,108.54
  6. Step 6: Final answer
    x = 178,127.73

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1.5x scale

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.