Home / 318,207.18-477,302.22-78,323.22

Finding the Fourth Proportional to 318,207.18, 477,302.22 and 78,323.22

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Solution

The fourth proportional to 318,207.18, 477,302.22 and 78,323.22 is: 117,482.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,207.18 : 477,302.22 = 78,323.22 : x
  2. Step 2: Convert to fraction form
    318,207.18/477,302.22 = 78,323.22/x
  3. Step 3: Cross multiply
    318,207.18x = 477,302.22 × 78,323.22
  4. Step 4: Simplify right side
    318,207.18x = 37,383,846,783.55
  5. Step 5: Solve for x
    x = 37,383,846,783.55/318,207.18
  6. Step 6: Final answer
    x = 117,482.73

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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.