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Finding the Fourth Proportional to 316,773.28, 437,147.13 and 189,448.88

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Solution

The fourth proportional to 316,773.28, 437,147.13 and 189,448.88 is: 261,439.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,773.28 : 437,147.13 = 189,448.88 : x
  2. Step 2: Convert to fraction form
    316,773.28/437,147.13 = 189,448.88/x
  3. Step 3: Cross multiply
    316,773.28x = 437,147.13 × 189,448.88
  4. Step 4: Simplify right side
    316,773.28x = 82,817,031,632.76
  5. Step 5: Solve for x
    x = 82,817,031,632.76/316,773.28
  6. Step 6: Final answer
    x = 261,439.45

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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.