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Finding the Fourth Proportional to 552,100.50, 761,891.40 and 307,083.60

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Solution

The fourth proportional to 552,100.50, 761,891.40 and 307,083.60 is: 423,771.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,100.50 : 761,891.40 = 307,083.60 : x
  2. Step 2: Convert to fraction form
    552,100.50/761,891.40 = 307,083.60/x
  3. Step 3: Cross multiply
    552,100.50x = 761,891.40 × 307,083.60
  4. Step 4: Simplify right side
    552,100.50x = 233,964,353,921.04
  5. Step 5: Solve for x
    x = 233,964,353,921.04/552,100.50
  6. Step 6: Final answer
    x = 423,771.31

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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.