Home / 455,254.80-682,882.20-139,712.40

Finding the Fourth Proportional to 455,254.80, 682,882.20 and 139,712.40

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Solution

The fourth proportional to 455,254.80, 682,882.20 and 139,712.40 is: 209,568.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,254.80 : 682,882.20 = 139,712.40 : x
  2. Step 2: Convert to fraction form
    455,254.80/682,882.20 = 139,712.40/x
  3. Step 3: Cross multiply
    455,254.80x = 682,882.20 × 139,712.40
  4. Step 4: Simplify right side
    455,254.80x = 95,407,111,079.28
  5. Step 5: Solve for x
    x = 95,407,111,079.28/455,254.80
  6. Step 6: Final answer
    x = 209,568.60

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1.5x scale

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.