Home / 455,109.32-682,638.42-139,565.36

Finding the Fourth Proportional to 455,109.32, 682,638.42 and 139,565.36

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Solution

The fourth proportional to 455,109.32, 682,638.42 and 139,565.36 is: 209,340.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,109.32 : 682,638.42 = 139,565.36 : x
  2. Step 2: Convert to fraction form
    455,109.32/682,638.42 = 139,565.36/x
  3. Step 3: Cross multiply
    455,109.32x = 682,638.42 × 139,565.36
  4. Step 4: Simplify right side
    455,109.32x = 95,272,676,837.13
  5. Step 5: Solve for x
    x = 95,272,676,837.13/455,109.32
  6. Step 6: Final answer
    x = 209,340.20

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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.