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Finding the Fourth Proportional to 398,888.08, 550,455.90 and 229,133.12

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Solution

The fourth proportional to 398,888.08, 550,455.90 and 229,133.12 is: 316,198.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,888.08 : 550,455.90 = 229,133.12 : x
  2. Step 2: Convert to fraction form
    398,888.08/550,455.90 = 229,133.12/x
  3. Step 3: Cross multiply
    398,888.08x = 550,455.90 × 229,133.12
  4. Step 4: Simplify right side
    398,888.08x = 126,127,677,789.41
  5. Step 5: Solve for x
    x = 126,127,677,789.41/398,888.08
  6. Step 6: Final answer
    x = 316,198.16

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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.