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Finding the Fourth Proportional to 201,618, 302,427 and 70,290

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Solution

The fourth proportional to 201,618, 302,427 and 70,290 is: 105,435

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,618 : 302,427 = 70,290 : x
  2. Step 2: Convert to fraction form
    201,618/302,427 = 70,290/x
  3. Step 3: Cross multiply
    201,618x = 302,427 × 70,290
  4. Step 4: Simplify right side
    201,618x = 21,257,593,830
  5. Step 5: Solve for x
    x = 21,257,593,830/201,618
  6. Step 6: Final answer
    x = 105,435

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.