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Finding the Fourth Proportional to 341,803.11, 512,705.93 and 105,144.15

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Solution

The fourth proportional to 341,803.11, 512,705.93 and 105,144.15 is: 157,716.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,803.11 : 512,705.93 = 105,144.15 : x
  2. Step 2: Convert to fraction form
    341,803.11/512,705.93 = 105,144.15/x
  3. Step 3: Cross multiply
    341,803.11x = 512,705.93 × 105,144.15
  4. Step 4: Simplify right side
    341,803.11x = 53,908,028,684.09
  5. Step 5: Solve for x
    x = 53,908,028,684.09/341,803.11
  6. Step 6: Final answer
    x = 157,716.61

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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.