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Finding the Fourth Proportional to 355,758.75, 491,063.72 and 255,448.35

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Solution

The fourth proportional to 355,758.75, 491,063.72 and 255,448.35 is: 352,602.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,758.75 : 491,063.72 = 255,448.35 : x
  2. Step 2: Convert to fraction form
    355,758.75/491,063.72 = 255,448.35/x
  3. Step 3: Cross multiply
    355,758.75x = 491,063.72 × 255,448.35
  4. Step 4: Simplify right side
    355,758.75x = 125,441,415,741.62
  5. Step 5: Solve for x
    x = 125,441,415,741.62/355,758.75
  6. Step 6: Final answer
    x = 352,602.47

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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.