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Finding the Fourth Proportional to 318,303.72, 477,486.74 and 115,954.80

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Solution

The fourth proportional to 318,303.72, 477,486.74 and 115,954.80 is: 173,943.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,303.72 : 477,486.74 = 115,954.80 : x
  2. Step 2: Convert to fraction form
    318,303.72/477,486.74 = 115,954.80/x
  3. Step 3: Cross multiply
    318,303.72x = 477,486.74 × 115,954.80
  4. Step 4: Simplify right side
    318,303.72x = 55,366,879,439.35
  5. Step 5: Solve for x
    x = 55,366,879,439.35/318,303.72
  6. Step 6: Final answer
    x = 173,943.55

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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.