Home / 351,931.87-485,666.31-190,786.78

Finding the Fourth Proportional to 351,931.87, 485,666.31 and 190,786.78

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Solution

The fourth proportional to 351,931.87, 485,666.31 and 190,786.78 is: 263,285.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,931.87 : 485,666.31 = 190,786.78 : x
  2. Step 2: Convert to fraction form
    351,931.87/485,666.31 = 190,786.78/x
  3. Step 3: Cross multiply
    351,931.87x = 485,666.31 × 190,786.78
  4. Step 4: Simplify right side
    351,931.87x = 92,658,711,439.38
  5. Step 5: Solve for x
    x = 92,658,711,439.38/351,931.87
  6. Step 6: Final answer
    x = 263,285.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.