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Finding the Fourth Proportional to 449,436.96, 620,212.08 and 258,445.96

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Solution

The fourth proportional to 449,436.96, 620,212.08 and 258,445.96 is: 356,649.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,436.96 : 620,212.08 = 258,445.96 : x
  2. Step 2: Convert to fraction form
    449,436.96/620,212.08 = 258,445.96/x
  3. Step 3: Cross multiply
    449,436.96x = 620,212.08 × 258,445.96
  4. Step 4: Simplify right side
    449,436.96x = 160,291,306,419.20
  5. Step 5: Solve for x
    x = 160,291,306,419.20/449,436.96
  6. Step 6: Final answer
    x = 356,649.14

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1.5x scale

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.