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Finding the Fourth Proportional to 374,412, 561,618 and 111,756

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Solution

The fourth proportional to 374,412, 561,618 and 111,756 is: 167,634

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,412 : 561,618 = 111,756 : x
  2. Step 2: Convert to fraction form
    374,412/561,618 = 111,756/x
  3. Step 3: Cross multiply
    374,412x = 561,618 × 111,756
  4. Step 4: Simplify right side
    374,412x = 62,764,181,208
  5. Step 5: Solve for x
    x = 62,764,181,208/374,412
  6. Step 6: Final answer
    x = 167,634

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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.