Home / 455,512.12-683,276.28-139,971.76

Finding the Fourth Proportional to 455,512.12, 683,276.28 and 139,971.76

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Solution

The fourth proportional to 455,512.12, 683,276.28 and 139,971.76 is: 209,960.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,512.12 : 683,276.28 = 139,971.76 : x
  2. Step 2: Convert to fraction form
    455,512.12/683,276.28 = 139,971.76/x
  3. Step 3: Cross multiply
    455,512.12x = 683,276.28 × 139,971.76
  4. Step 4: Simplify right side
    455,512.12x = 95,639,383,477.85
  5. Step 5: Solve for x
    x = 95,639,383,477.85/455,512.12
  6. Step 6: Final answer
    x = 209,960.13

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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.