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Finding the Fourth Proportional to 318,371.88, 477,557.83 and 218,228.48

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Solution

The fourth proportional to 318,371.88, 477,557.83 and 218,228.48 is: 327,342.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,371.88 : 477,557.83 = 218,228.48 : x
  2. Step 2: Convert to fraction form
    318,371.88/477,557.83 = 218,228.48/x
  3. Step 3: Cross multiply
    318,371.88x = 477,557.83 × 218,228.48
  4. Step 4: Simplify right side
    318,371.88x = 104,216,717,801.30
  5. Step 5: Solve for x
    x = 104,216,717,801.30/318,371.88
  6. Step 6: Final answer
    x = 327,342.72

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1.5x scale

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.