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Finding the Fourth Proportional to 345,855.36, 477,460.80 and 245,493.12

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Solution

The fourth proportional to 345,855.36, 477,460.80 and 245,493.12 is: 338,908.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,855.36 : 477,460.80 = 245,493.12 : x
  2. Step 2: Convert to fraction form
    345,855.36/477,460.80 = 245,493.12/x
  3. Step 3: Cross multiply
    345,855.36x = 477,460.80 × 245,493.12
  4. Step 4: Simplify right side
    345,855.36x = 117,213,341,469.70
  5. Step 5: Solve for x
    x = 117,213,341,469.70/345,855.36
  6. Step 6: Final answer
    x = 338,908.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.