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Finding the Fourth Proportional to 316,774.28, 437,148.51 and 189,449.88

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Solution

The fourth proportional to 316,774.28, 437,148.51 and 189,449.88 is: 261,440.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,774.28 : 437,148.51 = 189,449.88 : x
  2. Step 2: Convert to fraction form
    316,774.28/437,148.51 = 189,449.88/x
  3. Step 3: Cross multiply
    316,774.28x = 437,148.51 × 189,449.88
  4. Step 4: Simplify right side
    316,774.28x = 82,817,732,761.68
  5. Step 5: Solve for x
    x = 82,817,732,761.68/316,774.28
  6. Step 6: Final answer
    x = 261,440.84

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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.