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Finding the Fourth Proportional to 418,173.69, 627,461.39 and 228,626.40

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Solution

The fourth proportional to 418,173.69, 627,461.39 and 228,626.40 is: 343,049.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,173.69 : 627,461.39 = 228,626.40 : x
  2. Step 2: Convert to fraction form
    418,173.69/627,461.39 = 228,626.40/x
  3. Step 3: Cross multiply
    418,173.69x = 627,461.39 × 228,626.40
  4. Step 4: Simplify right side
    418,173.69x = 143,454,236,843.75
  5. Step 5: Solve for x
    x = 143,454,236,843.75/418,173.69
  6. Step 6: Final answer
    x = 343,049.41

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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.