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Finding the Fourth Proportional to 550,425.16, 759,612.30 and 343,815.90

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Solution

The fourth proportional to 550,425.16, 759,612.30 and 343,815.90 is: 474,481.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,425.16 : 759,612.30 = 343,815.90 : x
  2. Step 2: Convert to fraction form
    550,425.16/759,612.30 = 343,815.90/x
  3. Step 3: Cross multiply
    550,425.16x = 759,612.30 × 343,815.90
  4. Step 4: Simplify right side
    550,425.16x = 261,166,786,575.57
  5. Step 5: Solve for x
    x = 261,166,786,575.57/550,425.16
  6. Step 6: Final answer
    x = 474,481.92

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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.