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Finding the Fourth Proportional to 548,705.10, 757,242.42 and 306,973.26

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Solution

The fourth proportional to 548,705.10, 757,242.42 and 306,973.26 is: 423,639.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,705.10 : 757,242.42 = 306,973.26 : x
  2. Step 2: Convert to fraction form
    548,705.10/757,242.42 = 306,973.26/x
  3. Step 3: Cross multiply
    548,705.10x = 757,242.42 × 306,973.26
  4. Step 4: Simplify right side
    548,705.10x = 232,453,174,277.69
  5. Step 5: Solve for x
    x = 232,453,174,277.69/548,705.10
  6. Step 6: Final answer
    x = 423,639.54

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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.