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Finding the Fourth Proportional to 318,960.40, 477,850.20 and 185,904.40

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Solution

The fourth proportional to 318,960.40, 477,850.20 and 185,904.40 is: 278,512.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,960.40 : 477,850.20 = 185,904.40 : x
  2. Step 2: Convert to fraction form
    318,960.40/477,850.20 = 185,904.40/x
  3. Step 3: Cross multiply
    318,960.40x = 477,850.20 × 185,904.40
  4. Step 4: Simplify right side
    318,960.40x = 88,834,454,720.88
  5. Step 5: Solve for x
    x = 88,834,454,720.88/318,960.40
  6. Step 6: Final answer
    x = 278,512.49

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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.