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Finding the Fourth Proportional to 298,916.70, 447,718.95 and 259,550.70

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Solution

The fourth proportional to 298,916.70, 447,718.95 and 259,550.70 is: 388,756.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,916.70 : 447,718.95 = 259,550.70 : x
  2. Step 2: Convert to fraction form
    298,916.70/447,718.95 = 259,550.70/x
  3. Step 3: Cross multiply
    298,916.70x = 447,718.95 × 259,550.70
  4. Step 4: Simplify right side
    298,916.70x = 116,205,766,875.77
  5. Step 5: Solve for x
    x = 116,205,766,875.77/298,916.70
  6. Step 6: Final answer
    x = 388,756.36

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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.