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Finding the Fourth Proportional to 358,139.16, 494,221.72 and 196,994.20

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Solution

The fourth proportional to 358,139.16, 494,221.72 and 196,994.20 is: 271,846.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,139.16 : 494,221.72 = 196,994.20 : x
  2. Step 2: Convert to fraction form
    358,139.16/494,221.72 = 196,994.20/x
  3. Step 3: Cross multiply
    358,139.16x = 494,221.72 × 196,994.20
  4. Step 4: Simplify right side
    358,139.16x = 97,358,812,354.02
  5. Step 5: Solve for x
    x = 97,358,812,354.02/358,139.16
  6. Step 6: Final answer
    x = 271,846.32

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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.