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Finding the Fourth Proportional to 449,628.32, 620,499.60 and 248,437.28

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Solution

The fourth proportional to 449,628.32, 620,499.60 and 248,437.28 is: 342,850.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,628.32 : 620,499.60 = 248,437.28 : x
  2. Step 2: Convert to fraction form
    449,628.32/620,499.60 = 248,437.28/x
  3. Step 3: Cross multiply
    449,628.32x = 620,499.60 × 248,437.28
  4. Step 4: Simplify right side
    449,628.32x = 154,155,232,865.09
  5. Step 5: Solve for x
    x = 154,155,232,865.09/449,628.32
  6. Step 6: Final answer
    x = 342,850.36

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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.