Home / 543,345.58-815,139.32-178,623.67

Finding the Fourth Proportional to 543,345.58, 815,139.32 and 178,623.67

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Solution

The fourth proportional to 543,345.58, 815,139.32 and 178,623.67 is: 267,975.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,345.58 : 815,139.32 = 178,623.67 : x
  2. Step 2: Convert to fraction form
    543,345.58/815,139.32 = 178,623.67/x
  3. Step 3: Cross multiply
    543,345.58x = 815,139.32 × 178,623.67
  4. Step 4: Simplify right side
    543,345.58x = 145,603,176,899.70
  5. Step 5: Solve for x
    x = 145,603,176,899.70/543,345.58
  6. Step 6: Final answer
    x = 267,975.27

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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.