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Finding the Fourth Proportional to 548,705.13, 757,242.49 and 306,973.28

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Solution

The fourth proportional to 548,705.13, 757,242.49 and 306,973.28 is: 423,639.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,705.13 : 757,242.49 = 306,973.28 : x
  2. Step 2: Convert to fraction form
    548,705.13/757,242.49 = 306,973.28/x
  3. Step 3: Cross multiply
    548,705.13x = 757,242.49 × 306,973.28
  4. Step 4: Simplify right side
    548,705.13x = 232,453,212,036.34
  5. Step 5: Solve for x
    x = 232,453,212,036.34/548,705.13
  6. Step 6: Final answer
    x = 423,639.58

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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.