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Finding the Fourth Proportional to 398,889.08, 550,457.28 and 229,134.12

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Solution

The fourth proportional to 398,889.08, 550,457.28 and 229,134.12 is: 316,199.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,889.08 : 550,457.28 = 229,134.12 : x
  2. Step 2: Convert to fraction form
    398,889.08/550,457.28 = 229,134.12/x
  3. Step 3: Cross multiply
    398,889.08x = 550,457.28 × 229,134.12
  4. Step 4: Simplify right side
    398,889.08x = 126,128,544,450.39
  5. Step 5: Solve for x
    x = 126,128,544,450.39/398,889.08
  6. Step 6: Final answer
    x = 316,199.54

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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.