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Finding the Fourth Proportional to 482,040.44, 664,870.36 and 318,507.51

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Solution

The fourth proportional to 482,040.44, 664,870.36 and 318,507.51 is: 439,312.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,040.44 : 664,870.36 = 318,507.51 : x
  2. Step 2: Convert to fraction form
    482,040.44/664,870.36 = 318,507.51/x
  3. Step 3: Cross multiply
    482,040.44x = 664,870.36 × 318,507.51
  4. Step 4: Simplify right side
    482,040.44x = 211,766,202,836.40
  5. Step 5: Solve for x
    x = 211,766,202,836.40/482,040.44
  6. Step 6: Final answer
    x = 439,312.11

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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.