Home / 209,057.10-312,005.81-188,878.98

Finding the Fourth Proportional to 209,057.10, 312,005.81 and 188,878.98

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Solution

The fourth proportional to 209,057.10, 312,005.81 and 188,878.98 is: 281,891.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,057.10 : 312,005.81 = 188,878.98 : x
  2. Step 2: Convert to fraction form
    209,057.10/312,005.81 = 188,878.98/x
  3. Step 3: Cross multiply
    209,057.10x = 312,005.81 × 188,878.98
  4. Step 4: Simplify right side
    209,057.10x = 58,931,338,202.48
  5. Step 5: Solve for x
    x = 58,931,338,202.48/209,057.10
  6. Step 6: Final answer
    x = 281,891.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.