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Finding the Fourth Proportional to 298,869.48, 448,059.87 and 139,044.92

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Solution

The fourth proportional to 298,869.48, 448,059.87 and 139,044.92 is: 208,453.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,869.48 : 448,059.87 = 139,044.92 : x
  2. Step 2: Convert to fraction form
    298,869.48/448,059.87 = 139,044.92/x
  3. Step 3: Cross multiply
    298,869.48x = 448,059.87 × 139,044.92
  4. Step 4: Simplify right side
    298,869.48x = 62,300,446,539.06
  5. Step 5: Solve for x
    x = 62,300,446,539.06/298,869.48
  6. Step 6: Final answer
    x = 208,453.69

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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.