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Finding the Fourth Proportional to 306,003.65, 459,004.86 and 81,364.12

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Solution

The fourth proportional to 306,003.65, 459,004.86 and 81,364.12 is: 122,046.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,003.65 : 459,004.86 = 81,364.12 : x
  2. Step 2: Convert to fraction form
    306,003.65/459,004.86 = 81,364.12/x
  3. Step 3: Cross multiply
    306,003.65x = 459,004.86 × 81,364.12
  4. Step 4: Simplify right side
    306,003.65x = 37,346,525,362.11
  5. Step 5: Solve for x
    x = 37,346,525,362.11/306,003.65
  6. Step 6: Final answer
    x = 122,046.01

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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.