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Finding the Fourth Proportional to 304,443.40, 420,131.30 and 170,307.40

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Solution

The fourth proportional to 304,443.40, 420,131.30 and 170,307.40 is: 235,023.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,443.40 : 420,131.30 = 170,307.40 : x
  2. Step 2: Convert to fraction form
    304,443.40/420,131.30 = 170,307.40/x
  3. Step 3: Cross multiply
    304,443.40x = 420,131.30 × 170,307.40
  4. Step 4: Simplify right side
    304,443.40x = 71,551,469,361.62
  5. Step 5: Solve for x
    x = 71,551,469,361.62/304,443.40
  6. Step 6: Final answer
    x = 235,023.88

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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.