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Finding the Fourth Proportional to 355,279.14, 490,279.38 and 194,130.72

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Solution

The fourth proportional to 355,279.14, 490,279.38 and 194,130.72 is: 267,897.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,279.14 : 490,279.38 = 194,130.72 : x
  2. Step 2: Convert to fraction form
    355,279.14/490,279.38 = 194,130.72/x
  3. Step 3: Cross multiply
    355,279.14x = 490,279.38 × 194,130.72
  4. Step 4: Simplify right side
    355,279.14x = 95,178,289,040.55
  5. Step 5: Solve for x
    x = 95,178,289,040.55/355,279.14
  6. Step 6: Final answer
    x = 267,897.21

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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.