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Finding the Fourth Proportional to 331,653.88, 457,683.87 and 188,421.78

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Solution

The fourth proportional to 331,653.88, 457,683.87 and 188,421.78 is: 260,022.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,653.88 : 457,683.87 = 188,421.78 : x
  2. Step 2: Convert to fraction form
    331,653.88/457,683.87 = 188,421.78/x
  3. Step 3: Cross multiply
    331,653.88x = 457,683.87 × 188,421.78
  4. Step 4: Simplify right side
    331,653.88x = 86,237,611,885.58
  5. Step 5: Solve for x
    x = 86,237,611,885.58/331,653.88
  6. Step 6: Final answer
    x = 260,022.92

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1.5x scale

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.