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Finding the Fourth Proportional to 449,808.48, 620,728.38 and 245,856.96

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Solution

The fourth proportional to 449,808.48, 620,728.38 and 245,856.96 is: 339,278.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,808.48 : 620,728.38 = 245,856.96 : x
  2. Step 2: Convert to fraction form
    449,808.48/620,728.38 = 245,856.96/x
  3. Step 3: Cross multiply
    449,808.48x = 620,728.38 × 245,856.96
  4. Step 4: Simplify right side
    449,808.48x = 152,610,392,492.53
  5. Step 5: Solve for x
    x = 152,610,392,492.53/449,808.48
  6. Step 6: Final answer
    x = 339,278.60

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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.