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Finding the Fourth Proportional to 449,637.44, 620,498.40 and 248,432

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Solution

The fourth proportional to 449,637.44, 620,498.40 and 248,432 is: 342,835.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,637.44 : 620,498.40 = 248,432 : x
  2. Step 2: Convert to fraction form
    449,637.44/620,498.40 = 248,432/x
  3. Step 3: Cross multiply
    449,637.44x = 620,498.40 × 248,432
  4. Step 4: Simplify right side
    449,637.44x = 154,151,658,508.80
  5. Step 5: Solve for x
    x = 154,151,658,508.80/449,637.44
  6. Step 6: Final answer
    x = 342,835.46

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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.