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Finding the Fourth Proportional to 318,486.38, 477,803.39 and 108,124.32

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Solution

The fourth proportional to 318,486.38, 477,803.39 and 108,124.32 is: 162,211.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,486.38 : 477,803.39 = 108,124.32 : x
  2. Step 2: Convert to fraction form
    318,486.38/477,803.39 = 108,124.32/x
  3. Step 3: Cross multiply
    318,486.38x = 477,803.39 × 108,124.32
  4. Step 4: Simplify right side
    318,486.38x = 51,662,166,096.82
  5. Step 5: Solve for x
    x = 51,662,166,096.82/318,486.38
  6. Step 6: Final answer
    x = 162,211.54

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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.