Home / 255,741.12-383,618.97-78,244.20

Finding the Fourth Proportional to 255,741.12, 383,618.97 and 78,244.20

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Solution

The fourth proportional to 255,741.12, 383,618.97 and 78,244.20 is: 117,368.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,741.12 : 383,618.97 = 78,244.20 : x
  2. Step 2: Convert to fraction form
    255,741.12/383,618.97 = 78,244.20/x
  3. Step 3: Cross multiply
    255,741.12x = 383,618.97 × 78,244.20
  4. Step 4: Simplify right side
    255,741.12x = 30,015,959,412.47
  5. Step 5: Solve for x
    x = 30,015,959,412.47/255,741.12
  6. Step 6: Final answer
    x = 117,368.53

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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.