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Finding the Fourth Proportional to 455,095.64, 682,653.30 and 139,545.56

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Solution

The fourth proportional to 455,095.64, 682,653.30 and 139,545.56 is: 209,321.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,095.64 : 682,653.30 = 139,545.56 : x
  2. Step 2: Convert to fraction form
    455,095.64/682,653.30 = 139,545.56/x
  3. Step 3: Cross multiply
    455,095.64x = 682,653.30 × 139,545.56
  4. Step 4: Simplify right side
    455,095.64x = 95,261,237,034.35
  5. Step 5: Solve for x
    x = 95,261,237,034.35/455,095.64
  6. Step 6: Final answer
    x = 209,321.36

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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.