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Finding the Fourth Proportional to 318,086.72, 477,188.40 and 130,996.16

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Solution

The fourth proportional to 318,086.72, 477,188.40 and 130,996.16 is: 196,518.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,086.72 : 477,188.40 = 130,996.16 : x
  2. Step 2: Convert to fraction form
    318,086.72/477,188.40 = 130,996.16/x
  3. Step 3: Cross multiply
    318,086.72x = 477,188.40 × 130,996.16
  4. Step 4: Simplify right side
    318,086.72x = 62,509,847,996.54
  5. Step 5: Solve for x
    x = 62,509,847,996.54/318,086.72
  6. Step 6: Final answer
    x = 196,518.26

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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.