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Finding the Fourth Proportional to 324,457.72, 486,687.66 and 99,816.64

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Solution

The fourth proportional to 324,457.72, 486,687.66 and 99,816.64 is: 149,725.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,457.72 : 486,687.66 = 99,816.64 : x
  2. Step 2: Convert to fraction form
    324,457.72/486,687.66 = 99,816.64/x
  3. Step 3: Cross multiply
    324,457.72x = 486,687.66 × 99,816.64
  4. Step 4: Simplify right side
    324,457.72x = 48,579,526,950.66
  5. Step 5: Solve for x
    x = 48,579,526,950.66/324,457.72
  6. Step 6: Final answer
    x = 149,725.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.