Home / 455,122.32-682,657.92-139,578.36

Finding the Fourth Proportional to 455,122.32, 682,657.92 and 139,578.36

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Solution

The fourth proportional to 455,122.32, 682,657.92 and 139,578.36 is: 209,359.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,122.32 : 682,657.92 = 139,578.36 : x
  2. Step 2: Convert to fraction form
    455,122.32/682,657.92 = 139,578.36/x
  3. Step 3: Cross multiply
    455,122.32x = 682,657.92 × 139,578.36
  4. Step 4: Simplify right side
    455,122.32x = 95,284,272,914.61
  5. Step 5: Solve for x
    x = 95,284,272,914.61/455,122.32
  6. Step 6: Final answer
    x = 209,359.70

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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.