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Finding the Fourth Proportional to 298,863.36, 448,050.75 and 139,038.92

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Solution

The fourth proportional to 298,863.36, 448,050.75 and 139,038.92 is: 208,444.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,863.36 : 448,050.75 = 139,038.92 : x
  2. Step 2: Convert to fraction form
    298,863.36/448,050.75 = 139,038.92/x
  3. Step 3: Cross multiply
    298,863.36x = 448,050.75 × 139,038.92
  4. Step 4: Simplify right side
    298,863.36x = 62,296,491,303.73
  5. Step 5: Solve for x
    x = 62,296,491,303.73/298,863.36
  6. Step 6: Final answer
    x = 208,444.73

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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.