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Finding the Fourth Proportional to 353,515.77, 487,766.68 and 208,327.48

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Solution

The fourth proportional to 353,515.77, 487,766.68 and 208,327.48 is: 287,441.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,515.77 : 487,766.68 = 208,327.48 : x
  2. Step 2: Convert to fraction form
    353,515.77/487,766.68 = 208,327.48/x
  3. Step 3: Cross multiply
    353,515.77x = 487,766.68 × 208,327.48
  4. Step 4: Simplify right side
    353,515.77x = 101,615,203,272.37
  5. Step 5: Solve for x
    x = 101,615,203,272.37/353,515.77
  6. Step 6: Final answer
    x = 287,441.78

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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.