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Finding the Fourth Proportional to 318,415.80, 477,623.70 and 306,168.60

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Solution

The fourth proportional to 318,415.80, 477,623.70 and 306,168.60 is: 459,252.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,415.80 : 477,623.70 = 306,168.60 : x
  2. Step 2: Convert to fraction form
    318,415.80/477,623.70 = 306,168.60/x
  3. Step 3: Cross multiply
    318,415.80x = 477,623.70 × 306,168.60
  4. Step 4: Simplify right side
    318,415.80x = 146,233,379,555.82
  5. Step 5: Solve for x
    x = 146,233,379,555.82/318,415.80
  6. Step 6: Final answer
    x = 459,252.90

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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.