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Finding the Fourth Proportional to 398,633.22, 550,337.71 and 276,303.38

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Solution

The fourth proportional to 398,633.22, 550,337.71 and 276,303.38 is: 381,453.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,633.22 : 550,337.71 = 276,303.38 : x
  2. Step 2: Convert to fraction form
    398,633.22/550,337.71 = 276,303.38/x
  3. Step 3: Cross multiply
    398,633.22x = 550,337.71 × 276,303.38
  4. Step 4: Simplify right side
    398,633.22x = 152,060,166,872.25
  5. Step 5: Solve for x
    x = 152,060,166,872.25/398,633.22
  6. Step 6: Final answer
    x = 381,453.82

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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.