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Finding the Fourth Proportional to 366,519.40, 550,188.70 and 342,455.40

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Solution

The fourth proportional to 366,519.40, 550,188.70 and 342,455.40 is: 514,065.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,519.40 : 550,188.70 = 342,455.40 : x
  2. Step 2: Convert to fraction form
    366,519.40/550,188.70 = 342,455.40/x
  3. Step 3: Cross multiply
    366,519.40x = 550,188.70 × 342,455.40
  4. Step 4: Simplify right side
    366,519.40x = 188,415,091,333.98
  5. Step 5: Solve for x
    x = 188,415,091,333.98/366,519.40
  6. Step 6: Final answer
    x = 514,065.81

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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.