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Finding the Fourth Proportional to 483,457.10, 667,131.68 and 279,521.10

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Solution

The fourth proportional to 483,457.10, 667,131.68 and 279,521.10 is: 385,716.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,457.10 : 667,131.68 = 279,521.10 : x
  2. Step 2: Convert to fraction form
    483,457.10/667,131.68 = 279,521.10/x
  3. Step 3: Cross multiply
    483,457.10x = 667,131.68 × 279,521.10
  4. Step 4: Simplify right side
    483,457.10x = 186,477,381,038.45
  5. Step 5: Solve for x
    x = 186,477,381,038.45/483,457.10
  6. Step 6: Final answer
    x = 385,716.50

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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.