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Finding the Fourth Proportional to 449,573.12, 620,453.80 and 245,655

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Solution

The fourth proportional to 449,573.12, 620,453.80 and 245,655 is: 339,027.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,573.12 : 620,453.80 = 245,655 : x
  2. Step 2: Convert to fraction form
    449,573.12/620,453.80 = 245,655/x
  3. Step 3: Cross multiply
    449,573.12x = 620,453.80 × 245,655
  4. Step 4: Simplify right side
    449,573.12x = 152,417,578,239
  5. Step 5: Solve for x
    x = 152,417,578,239/449,573.12
  6. Step 6: Final answer
    x = 339,027.34

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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.