Home / 272,197.05-408,378.57-139,170.72

Finding the Fourth Proportional to 272,197.05, 408,378.57 and 139,170.72

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Solution

The fourth proportional to 272,197.05, 408,378.57 and 139,170.72 is: 208,798.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,197.05 : 408,378.57 = 139,170.72 : x
  2. Step 2: Convert to fraction form
    272,197.05/408,378.57 = 139,170.72/x
  3. Step 3: Cross multiply
    272,197.05x = 408,378.57 × 139,170.72
  4. Step 4: Simplify right side
    272,197.05x = 56,834,339,619.47
  5. Step 5: Solve for x
    x = 56,834,339,619.47/272,197.05
  6. Step 6: Final answer
    x = 208,798.51

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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.