Home / 256,651,446.40-384,977,169.60-188,626,998.40

Finding the Fourth Proportional to 256,651,446.40, 384,977,169.60 and 188,626,998.40

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Solution

The fourth proportional to 256,651,446.40, 384,977,169.60 and 188,626,998.40 is: 282,940,497.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,651,446.40 : 384,977,169.60 = 188,626,998.40 : x
  2. Step 2: Convert to fraction form
    256,651,446.40/384,977,169.60 = 188,626,998.40/x
  3. Step 3: Cross multiply
    256,651,446.40x = 384,977,169.60 × 188,626,998.40
  4. Step 4: Simplify right side
    256,651,446.40x = 72,617,087,954,175,728
  5. Step 5: Solve for x
    x = 72,617,087,954,175,728/256,651,446.40
  6. Step 6: Final answer
    x = 282,940,497.60

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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.