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Finding the Fourth Proportional to 398,554, 550,004.52 and 228,842.80

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Solution

The fourth proportional to 398,554, 550,004.52 and 228,842.80 is: 315,803.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,554 : 550,004.52 = 228,842.80 : x
  2. Step 2: Convert to fraction form
    398,554/550,004.52 = 228,842.80/x
  3. Step 3: Cross multiply
    398,554x = 550,004.52 × 228,842.80
  4. Step 4: Simplify right side
    398,554x = 125,864,574,369.46
  5. Step 5: Solve for x
    x = 125,864,574,369.46/398,554
  6. Step 6: Final answer
    x = 315,803.06

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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.