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Finding the Fourth Proportional to 318,485.52, 475,176.78 and 254,143.98

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Solution

The fourth proportional to 318,485.52, 475,176.78 and 254,143.98 is: 379,179.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,485.52 : 475,176.78 = 254,143.98 : x
  2. Step 2: Convert to fraction form
    318,485.52/475,176.78 = 254,143.98/x
  3. Step 3: Cross multiply
    318,485.52x = 475,176.78 × 254,143.98
  4. Step 4: Simplify right side
    318,485.52x = 120,763,318,072.78
  5. Step 5: Solve for x
    x = 120,763,318,072.78/318,485.52
  6. Step 6: Final answer
    x = 379,179.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.