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Finding the Fourth Proportional to 487,358.64, 731,037.96 and 321,107.76

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Solution

The fourth proportional to 487,358.64, 731,037.96 and 321,107.76 is: 481,661.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,358.64 : 731,037.96 = 321,107.76 : x
  2. Step 2: Convert to fraction form
    487,358.64/731,037.96 = 321,107.76/x
  3. Step 3: Cross multiply
    487,358.64x = 731,037.96 × 321,107.76
  4. Step 4: Simplify right side
    487,358.64x = 234,741,961,810.57
  5. Step 5: Solve for x
    x = 234,741,961,810.57/487,358.64
  6. Step 6: Final answer
    x = 481,661.64

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.