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Finding the Fourth Proportional to 486,790.93, 671,769.79 and 268,993.54

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Solution

The fourth proportional to 486,790.93, 671,769.79 and 268,993.54 is: 371,210.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,790.93 : 671,769.79 = 268,993.54 : x
  2. Step 2: Convert to fraction form
    486,790.93/671,769.79 = 268,993.54/x
  3. Step 3: Cross multiply
    486,790.93x = 671,769.79 × 268,993.54
  4. Step 4: Simplify right side
    486,790.93x = 180,701,734,044.39
  5. Step 5: Solve for x
    x = 180,701,734,044.39/486,790.93
  6. Step 6: Final answer
    x = 371,210.15

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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.