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Finding the Fourth Proportional to 449,291.30, 620,023.05 and 245,342.61

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Solution

The fourth proportional to 449,291.30, 620,023.05 and 245,342.61 is: 338,573.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,291.30 : 620,023.05 = 245,342.61 : x
  2. Step 2: Convert to fraction form
    449,291.30/620,023.05 = 245,342.61/x
  3. Step 3: Cross multiply
    449,291.30x = 620,023.05 × 245,342.61
  4. Step 4: Simplify right side
    449,291.30x = 152,118,073,347.16
  5. Step 5: Solve for x
    x = 152,118,073,347.16/449,291.30
  6. Step 6: Final answer
    x = 338,573.38

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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.