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Finding the Fourth Proportional to 319,363.65, 440,774.51 and 192,109.41

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Solution

The fourth proportional to 319,363.65, 440,774.51 and 192,109.41 is: 265,142.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,363.65 : 440,774.51 = 192,109.41 : x
  2. Step 2: Convert to fraction form
    319,363.65/440,774.51 = 192,109.41/x
  3. Step 3: Cross multiply
    319,363.65x = 440,774.51 × 192,109.41
  4. Step 4: Simplify right side
    319,363.65x = 84,676,930,098.59
  5. Step 5: Solve for x
    x = 84,676,930,098.59/319,363.65
  6. Step 6: Final answer
    x = 265,142.67

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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.