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Finding the Fourth Proportional to 318,302.72, 477,485.24 and 115,953.80

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Solution

The fourth proportional to 318,302.72, 477,485.24 and 115,953.80 is: 173,942.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,302.72 : 477,485.24 = 115,953.80 : x
  2. Step 2: Convert to fraction form
    318,302.72/477,485.24 = 115,953.80/x
  3. Step 3: Cross multiply
    318,302.72x = 477,485.24 × 115,953.80
  4. Step 4: Simplify right side
    318,302.72x = 55,366,228,021.91
  5. Step 5: Solve for x
    x = 55,366,228,021.91/318,302.72
  6. Step 6: Final answer
    x = 173,942.05

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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.