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Finding the Fourth Proportional to 318,774.58, 477,939.93 and 141,185.32

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Solution

The fourth proportional to 318,774.58, 477,939.93 and 141,185.32 is: 211,679.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,774.58 : 477,939.93 = 141,185.32 : x
  2. Step 2: Convert to fraction form
    318,774.58/477,939.93 = 141,185.32/x
  3. Step 3: Cross multiply
    318,774.58x = 477,939.93 × 141,185.32
  4. Step 4: Simplify right side
    318,774.58x = 67,478,102,819.98
  5. Step 5: Solve for x
    x = 67,478,102,819.98/318,774.58
  6. Step 6: Final answer
    x = 211,679.68

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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.