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Finding the Fourth Proportional to 550,396.10, 759,552.90 and 305,385.41

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Solution

The fourth proportional to 550,396.10, 759,552.90 and 305,385.41 is: 421,435.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,396.10 : 759,552.90 = 305,385.41 : x
  2. Step 2: Convert to fraction form
    550,396.10/759,552.90 = 305,385.41/x
  3. Step 3: Cross multiply
    550,396.10x = 759,552.90 × 305,385.41
  4. Step 4: Simplify right side
    550,396.10x = 231,956,373,783.19
  5. Step 5: Solve for x
    x = 231,956,373,783.19/550,396.10
  6. Step 6: Final answer
    x = 421,435.35

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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.