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Finding the Fourth Proportional to 552,107.25, 761,900.70 and 307,090.35

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Solution

The fourth proportional to 552,107.25, 761,900.70 and 307,090.35 is: 423,780.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,107.25 : 761,900.70 = 307,090.35 : x
  2. Step 2: Convert to fraction form
    552,107.25/761,900.70 = 307,090.35/x
  3. Step 3: Cross multiply
    552,107.25x = 761,900.70 × 307,090.35
  4. Step 4: Simplify right side
    552,107.25x = 233,972,352,628.25
  5. Step 5: Solve for x
    x = 233,972,352,628.25/552,107.25
  6. Step 6: Final answer
    x = 423,780.62

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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.