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Finding the Fourth Proportional to 355,313.71, 490,339.34 and 194,175.55

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Solution

The fourth proportional to 355,313.71, 490,339.34 and 194,175.55 is: 267,965.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,313.71 : 490,339.34 = 194,175.55 : x
  2. Step 2: Convert to fraction form
    355,313.71/490,339.34 = 194,175.55/x
  3. Step 3: Cross multiply
    355,313.71x = 490,339.34 × 194,175.55
  4. Step 4: Simplify right side
    355,313.71x = 95,211,911,031.14
  5. Step 5: Solve for x
    x = 95,211,911,031.14/355,313.71
  6. Step 6: Final answer
    x = 267,965.77

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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.