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Finding the Fourth Proportional to 358,701.18, 494,971 and 220,858.22

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Solution

The fourth proportional to 358,701.18, 494,971 and 220,858.22 is: 304,761.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,701.18 : 494,971 = 220,858.22 : x
  2. Step 2: Convert to fraction form
    358,701.18/494,971 = 220,858.22/x
  3. Step 3: Cross multiply
    358,701.18x = 494,971 × 220,858.22
  4. Step 4: Simplify right side
    358,701.18x = 109,318,414,011.62
  5. Step 5: Solve for x
    x = 109,318,414,011.62/358,701.18
  6. Step 6: Final answer
    x = 304,761.79

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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.