Home / 306,011.16-459,016.11-81,371.61

Finding the Fourth Proportional to 306,011.16, 459,016.11 and 81,371.61

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Solution

The fourth proportional to 306,011.16, 459,016.11 and 81,371.61 is: 122,057.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,011.16 : 459,016.11 = 81,371.61 : x
  2. Step 2: Convert to fraction form
    306,011.16/459,016.11 = 81,371.61/x
  3. Step 3: Cross multiply
    306,011.16x = 459,016.11 × 81,371.61
  4. Step 4: Simplify right side
    306,011.16x = 37,350,879,886.64
  5. Step 5: Solve for x
    x = 37,350,879,886.64/306,011.16
  6. Step 6: Final answer
    x = 122,057.25

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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.