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Finding the Fourth Proportional to 481,425.32, 664,389.80 and 290,434.64

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Solution

The fourth proportional to 481,425.32, 664,389.80 and 290,434.64 is: 400,813.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,425.32 : 664,389.80 = 290,434.64 : x
  2. Step 2: Convert to fraction form
    481,425.32/664,389.80 = 290,434.64/x
  3. Step 3: Cross multiply
    481,425.32x = 664,389.80 × 290,434.64
  4. Step 4: Simplify right side
    481,425.32x = 192,961,812,382.67
  5. Step 5: Solve for x
    x = 192,961,812,382.67/481,425.32
  6. Step 6: Final answer
    x = 400,813.59

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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.