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Finding the Fourth Proportional to 483,313.11, 666,821.98 and 279,289.71

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Solution

The fourth proportional to 483,313.11, 666,821.98 and 279,289.71 is: 385,333.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,313.11 : 666,821.98 = 279,289.71 : x
  2. Step 2: Convert to fraction form
    483,313.11/666,821.98 = 279,289.71/x
  3. Step 3: Cross multiply
    483,313.11x = 666,821.98 × 279,289.71
  4. Step 4: Simplify right side
    483,313.11x = 186,236,515,264.36
  5. Step 5: Solve for x
    x = 186,236,515,264.36/483,313.11
  6. Step 6: Final answer
    x = 385,333.05

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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.