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Finding the Fourth Proportional to 550,317.12, 759,445.92 and 320,868.15

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Solution

The fourth proportional to 550,317.12, 759,445.92 and 320,868.15 is: 442,802.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,317.12 : 759,445.92 = 320,868.15 : x
  2. Step 2: Convert to fraction form
    550,317.12/759,445.92 = 320,868.15/x
  3. Step 3: Cross multiply
    550,317.12x = 759,445.92 × 320,868.15
  4. Step 4: Simplify right side
    550,317.12x = 243,682,007,375.45
  5. Step 5: Solve for x
    x = 243,682,007,375.45/550,317.12
  6. Step 6: Final answer
    x = 442,802.88

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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.