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Finding the Fourth Proportional to 318,283.56, 477,323.28 and 105,003.68

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Solution

The fourth proportional to 318,283.56, 477,323.28 and 105,003.68 is: 157,471.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,283.56 : 477,323.28 = 105,003.68 : x
  2. Step 2: Convert to fraction form
    318,283.56/477,323.28 = 105,003.68/x
  3. Step 3: Cross multiply
    318,283.56x = 477,323.28 × 105,003.68
  4. Step 4: Simplify right side
    318,283.56x = 50,120,698,563.05
  5. Step 5: Solve for x
    x = 50,120,698,563.05/318,283.56
  6. Step 6: Final answer
    x = 157,471.84

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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.