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Finding the Fourth Proportional to 318,505.66, 477,832.30 and 108,143.59

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Solution

The fourth proportional to 318,505.66, 477,832.30 and 108,143.59 is: 162,240.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,505.66 : 477,832.30 = 108,143.59 : x
  2. Step 2: Convert to fraction form
    318,505.66/477,832.30 = 108,143.59/x
  3. Step 3: Cross multiply
    318,505.66x = 477,832.30 × 108,143.59
  4. Step 4: Simplify right side
    318,505.66x = 51,674,500,339.96
  5. Step 5: Solve for x
    x = 51,674,500,339.96/318,505.66
  6. Step 6: Final answer
    x = 162,240.45

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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.