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Finding the Fourth Proportional to 455,083.32, 682,599.42 and 139,539.30

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Solution

The fourth proportional to 455,083.32, 682,599.42 and 139,539.30 is: 209,301.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,083.32 : 682,599.42 = 139,539.30 : x
  2. Step 2: Convert to fraction form
    455,083.32/682,599.42 = 139,539.30/x
  3. Step 3: Cross multiply
    455,083.32x = 682,599.42 × 139,539.30
  4. Step 4: Simplify right side
    455,083.32x = 95,249,445,247.21
  5. Step 5: Solve for x
    x = 95,249,445,247.21/455,083.32
  6. Step 6: Final answer
    x = 209,301.11

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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.