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Finding the Fourth Proportional to 318,321.19, 477,609.37 and 115,931.39

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Solution

The fourth proportional to 318,321.19, 477,609.37 and 115,931.39 is: 173,943.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,321.19 : 477,609.37 = 115,931.39 : x
  2. Step 2: Convert to fraction form
    318,321.19/477,609.37 = 115,931.39/x
  3. Step 3: Cross multiply
    318,321.19x = 477,609.37 × 115,931.39
  4. Step 4: Simplify right side
    318,321.19x = 55,369,918,141.12
  5. Step 5: Solve for x
    x = 55,369,918,141.12/318,321.19
  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.