Home / 209,719.40-313,964.70-185,143.40

Finding the Fourth Proportional to 209,719.40, 313,964.70 and 185,143.40

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Solution

The fourth proportional to 209,719.40, 313,964.70 and 185,143.40 is: 277,172.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,719.40 : 313,964.70 = 185,143.40 : x
  2. Step 2: Convert to fraction form
    209,719.40/313,964.70 = 185,143.40/x
  3. Step 3: Cross multiply
    209,719.40x = 313,964.70 × 185,143.40
  4. Step 4: Simplify right side
    209,719.40x = 58,128,492,037.98
  5. Step 5: Solve for x
    x = 58,128,492,037.98/209,719.40
  6. Step 6: Final answer
    x = 277,172.70

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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.