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Finding the Fourth Proportional to 449,336.16, 620,116.72 and 258,409.44

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Solution

The fourth proportional to 449,336.16, 620,116.72 and 258,409.44 is: 356,623.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,336.16 : 620,116.72 = 258,409.44 : x
  2. Step 2: Convert to fraction form
    449,336.16/620,116.72 = 258,409.44/x
  3. Step 3: Cross multiply
    449,336.16x = 620,116.72 × 258,409.44
  4. Step 4: Simplify right side
    449,336.16x = 160,244,014,349.84
  5. Step 5: Solve for x
    x = 160,244,014,349.84/449,336.16
  6. Step 6: Final answer
    x = 356,623.90

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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.