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Finding the Fourth Proportional to 548,645.46, 757,100.16 and 306,881.28

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Solution

The fourth proportional to 548,645.46, 757,100.16 and 306,881.28 is: 423,479.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,645.46 : 757,100.16 = 306,881.28 : x
  2. Step 2: Convert to fraction form
    548,645.46/757,100.16 = 306,881.28/x
  3. Step 3: Cross multiply
    548,645.46x = 757,100.16 × 306,881.28
  4. Step 4: Simplify right side
    548,645.46x = 232,339,866,189.01
  5. Step 5: Solve for x
    x = 232,339,866,189.01/548,645.46
  6. Step 6: Final answer
    x = 423,479.06

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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.