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Finding the Fourth Proportional to 355,635.90, 491,330.13 and 298,186.14

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Solution

The fourth proportional to 355,635.90, 491,330.13 and 298,186.14 is: 411,960.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,635.90 : 491,330.13 = 298,186.14 : x
  2. Step 2: Convert to fraction form
    355,635.90/491,330.13 = 298,186.14/x
  3. Step 3: Cross multiply
    355,635.90x = 491,330.13 × 298,186.14
  4. Step 4: Simplify right side
    355,635.90x = 146,507,834,930.40
  5. Step 5: Solve for x
    x = 146,507,834,930.40/355,635.90
  6. Step 6: Final answer
    x = 411,960.20

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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.