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Finding the Fourth Proportional to 306,453.48, 422,911.47 and 170,500.08

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Solution

The fourth proportional to 306,453.48, 422,911.47 and 170,500.08 is: 235,293.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,453.48 : 422,911.47 = 170,500.08 : x
  2. Step 2: Convert to fraction form
    306,453.48/422,911.47 = 170,500.08/x
  3. Step 3: Cross multiply
    306,453.48x = 422,911.47 × 170,500.08
  4. Step 4: Simplify right side
    306,453.48x = 72,106,439,467.92
  5. Step 5: Solve for x
    x = 72,106,439,467.92/306,453.48
  6. Step 6: Final answer
    x = 235,293.26

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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.