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Finding the Fourth Proportional to 552,076.56, 761,865.75 and 310,359.60

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Solution

The fourth proportional to 552,076.56, 761,865.75 and 310,359.60 is: 428,296.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,076.56 : 761,865.75 = 310,359.60 : x
  2. Step 2: Convert to fraction form
    552,076.56/761,865.75 = 310,359.60/x
  3. Step 3: Cross multiply
    552,076.56x = 761,865.75 × 310,359.60
  4. Step 4: Simplify right side
    552,076.56x = 236,452,349,423.70
  5. Step 5: Solve for x
    x = 236,452,349,423.70/552,076.56
  6. Step 6: Final answer
    x = 428,296.30

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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.