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Finding the Fourth Proportional to 398,612.37, 550,109.58 and 228,872.01

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Solution

The fourth proportional to 398,612.37, 550,109.58 and 228,872.01 is: 315,857.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,612.37 : 550,109.58 = 228,872.01 : x
  2. Step 2: Convert to fraction form
    398,612.37/550,109.58 = 228,872.01/x
  3. Step 3: Cross multiply
    398,612.37x = 550,109.58 × 228,872.01
  4. Step 4: Simplify right side
    398,612.37x = 125,904,685,294.86
  5. Step 5: Solve for x
    x = 125,904,685,294.86/398,612.37
  6. Step 6: Final answer
    x = 315,857.45

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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.