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Finding the Fourth Proportional to 483,251.63, 666,848.21 and 279,315.75

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Solution

The fourth proportional to 483,251.63, 666,848.21 and 279,315.75 is: 385,433.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,251.63 : 666,848.21 = 279,315.75 : x
  2. Step 2: Convert to fraction form
    483,251.63/666,848.21 = 279,315.75/x
  3. Step 3: Cross multiply
    483,251.63x = 666,848.21 × 279,315.75
  4. Step 4: Simplify right side
    483,251.63x = 186,261,206,515.73
  5. Step 5: Solve for x
    x = 186,261,206,515.73/483,251.63
  6. Step 6: Final answer
    x = 385,433.17

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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.