Home / 408,913.38-613,364.58-105,305.85

Finding the Fourth Proportional to 408,913.38, 613,364.58 and 105,305.85

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Solution

The fourth proportional to 408,913.38, 613,364.58 and 105,305.85 is: 157,957.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,913.38 : 613,364.58 = 105,305.85 : x
  2. Step 2: Convert to fraction form
    408,913.38/613,364.58 = 105,305.85/x
  3. Step 3: Cross multiply
    408,913.38x = 613,364.58 × 105,305.85
  4. Step 4: Simplify right side
    408,913.38x = 64,590,878,456.79
  5. Step 5: Solve for x
    x = 64,590,878,456.79/408,913.38
  6. Step 6: Final answer
    x = 157,957.36

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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.