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Finding the Fourth Proportional to 306,079.12, 459,145.08 and 84,463.12

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Solution

The fourth proportional to 306,079.12, 459,145.08 and 84,463.12 is: 126,701.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,079.12 : 459,145.08 = 84,463.12 : x
  2. Step 2: Convert to fraction form
    306,079.12/459,145.08 = 84,463.12/x
  3. Step 3: Cross multiply
    306,079.12x = 459,145.08 × 84,463.12
  4. Step 4: Simplify right side
    306,079.12x = 38,780,825,989.45
  5. Step 5: Solve for x
    x = 38,780,825,989.45/306,079.12
  6. Step 6: Final answer
    x = 126,701.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.