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Finding the Fourth Proportional to 438,563.36, 657,860.80 and 225,273.76

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Solution

The fourth proportional to 438,563.36, 657,860.80 and 225,273.76 is: 337,918.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,563.36 : 657,860.80 = 225,273.76 : x
  2. Step 2: Convert to fraction form
    438,563.36/657,860.80 = 225,273.76/x
  3. Step 3: Cross multiply
    438,563.36x = 657,860.80 × 225,273.76
  4. Step 4: Simplify right side
    438,563.36x = 148,198,775,972.61
  5. Step 5: Solve for x
    x = 148,198,775,972.61/438,563.36
  6. Step 6: Final answer
    x = 337,918.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.