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Finding the Fourth Proportional to 382,818.83, 574,105.79 and 126,603.81

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Solution

The fourth proportional to 382,818.83, 574,105.79 and 126,603.81 is: 189,865.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,818.83 : 574,105.79 = 126,603.81 : x
  2. Step 2: Convert to fraction form
    382,818.83/574,105.79 = 126,603.81/x
  3. Step 3: Cross multiply
    382,818.83x = 574,105.79 × 126,603.81
  4. Step 4: Simplify right side
    382,818.83x = 72,683,979,724.04
  5. Step 5: Solve for x
    x = 72,683,979,724.04/382,818.83
  6. Step 6: Final answer
    x = 189,865.22

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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.