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Finding the Fourth Proportional to 355,402.56, 490,442.13 and 194,256.30

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Solution

The fourth proportional to 355,402.56, 490,442.13 and 194,256.30 is: 268,066.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,402.56 : 490,442.13 = 194,256.30 : x
  2. Step 2: Convert to fraction form
    355,402.56/490,442.13 = 194,256.30/x
  3. Step 3: Cross multiply
    355,402.56x = 490,442.13 × 194,256.30
  4. Step 4: Simplify right side
    355,402.56x = 95,271,473,537.92
  5. Step 5: Solve for x
    x = 95,271,473,537.92/355,402.56
  6. Step 6: Final answer
    x = 268,066.37

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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.