Home / 306,009.15-459,013.11-81,369.62

Finding the Fourth Proportional to 306,009.15, 459,013.11 and 81,369.62

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Solution

The fourth proportional to 306,009.15, 459,013.11 and 81,369.62 is: 122,054.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,009.15 : 459,013.11 = 81,369.62 : x
  2. Step 2: Convert to fraction form
    306,009.15/459,013.11 = 81,369.62/x
  3. Step 3: Cross multiply
    306,009.15x = 459,013.11 × 81,369.62
  4. Step 4: Simplify right side
    306,009.15x = 37,349,722,335.72
  5. Step 5: Solve for x
    x = 37,349,722,335.72/306,009.15
  6. Step 6: Final answer
    x = 122,054.27

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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.