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Finding the Fourth Proportional to 419,080.80, 578,373.68 and 247,053.43

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Solution

The fourth proportional to 419,080.80, 578,373.68 and 247,053.43 is: 340,958.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,080.80 : 578,373.68 = 247,053.43 : x
  2. Step 2: Convert to fraction form
    419,080.80/578,373.68 = 247,053.43/x
  3. Step 3: Cross multiply
    419,080.80x = 578,373.68 × 247,053.43
  4. Step 4: Simplify right side
    419,080.80x = 142,889,200,950.73
  5. Step 5: Solve for x
    x = 142,889,200,950.73/419,080.80
  6. Step 6: Final answer
    x = 340,958.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.