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Finding the Fourth Proportional to 316,775.79, 437,150.58 and 189,451.38

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Solution

The fourth proportional to 316,775.79, 437,150.58 and 189,451.38 is: 261,442.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,775.79 : 437,150.58 = 189,451.38 : x
  2. Step 2: Convert to fraction form
    316,775.79/437,150.58 = 189,451.38/x
  3. Step 3: Cross multiply
    316,775.79x = 437,150.58 × 189,451.38
  4. Step 4: Simplify right side
    316,775.79x = 82,818,780,648.80
  5. Step 5: Solve for x
    x = 82,818,780,648.80/316,775.79
  6. Step 6: Final answer
    x = 261,442.90

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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.