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Finding the Fourth Proportional to 318,549.46, 477,399.61 and 118,668.60

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Solution

The fourth proportional to 318,549.46, 477,399.61 and 118,668.60 is: 177,844.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,549.46 : 477,399.61 = 118,668.60 : x
  2. Step 2: Convert to fraction form
    318,549.46/477,399.61 = 118,668.60/x
  3. Step 3: Cross multiply
    318,549.46x = 477,399.61 × 118,668.60
  4. Step 4: Simplify right side
    318,549.46x = 56,652,343,359.25
  5. Step 5: Solve for x
    x = 56,652,343,359.25/318,549.46
  6. Step 6: Final answer
    x = 177,844.73

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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.