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Finding the Fourth Proportional to 316,775.28, 437,149.89 and 189,450.88

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Solution

The fourth proportional to 316,775.28, 437,149.89 and 189,450.88 is: 261,442.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,775.28 : 437,149.89 = 189,450.88 : x
  2. Step 2: Convert to fraction form
    316,775.28/437,149.89 = 189,450.88/x
  3. Step 3: Cross multiply
    316,775.28x = 437,149.89 × 189,450.88
  4. Step 4: Simplify right side
    316,775.28x = 82,818,431,352.40
  5. Step 5: Solve for x
    x = 82,818,431,352.40/316,775.28
  6. Step 6: Final answer
    x = 261,442.22

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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.