Home / 255,971.49-384,013.23-78,492.33

Finding the Fourth Proportional to 255,971.49, 384,013.23 and 78,492.33

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Solution

The fourth proportional to 255,971.49, 384,013.23 and 78,492.33 is: 117,755.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,971.49 : 384,013.23 = 78,492.33 : x
  2. Step 2: Convert to fraction form
    255,971.49/384,013.23 = 78,492.33/x
  3. Step 3: Cross multiply
    255,971.49x = 384,013.23 × 78,492.33
  4. Step 4: Simplify right side
    255,971.49x = 30,142,093,173.53
  5. Step 5: Solve for x
    x = 30,142,093,173.53/255,971.49
  6. Step 6: Final answer
    x = 117,755.67

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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.