Home / 312,733.18-469,099.88-76,074.40

Finding the Fourth Proportional to 312,733.18, 469,099.88 and 76,074.40

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Solution

The fourth proportional to 312,733.18, 469,099.88 and 76,074.40 is: 114,111.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,733.18 : 469,099.88 = 76,074.40 : x
  2. Step 2: Convert to fraction form
    312,733.18/469,099.88 = 76,074.40/x
  3. Step 3: Cross multiply
    312,733.18x = 469,099.88 × 76,074.40
  4. Step 4: Simplify right side
    312,733.18x = 35,686,491,911.07
  5. Step 5: Solve for x
    x = 35,686,491,911.07/312,733.18
  6. Step 6: Final answer
    x = 114,111.63

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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.