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Finding the Fourth Proportional to 548,620.80, 757,166.40 and 306,916.80

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Solution

The fourth proportional to 548,620.80, 757,166.40 and 306,916.80 is: 423,584.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,620.80 : 757,166.40 = 306,916.80 : x
  2. Step 2: Convert to fraction form
    548,620.80/757,166.40 = 306,916.80/x
  3. Step 3: Cross multiply
    548,620.80x = 757,166.40 × 306,916.80
  4. Step 4: Simplify right side
    548,620.80x = 232,387,088,555.52
  5. Step 5: Solve for x
    x = 232,387,088,555.52/548,620.80
  6. Step 6: Final answer
    x = 423,584.17

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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.