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Finding the Fourth Proportional to 366,911.60, 550,367.40 and 278,338.10

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Solution

The fourth proportional to 366,911.60, 550,367.40 and 278,338.10 is: 417,507.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,911.60 : 550,367.40 = 278,338.10 : x
  2. Step 2: Convert to fraction form
    366,911.60/550,367.40 = 278,338.10/x
  3. Step 3: Cross multiply
    366,911.60x = 550,367.40 × 278,338.10
  4. Step 4: Simplify right side
    366,911.60x = 153,188,216,417.94
  5. Step 5: Solve for x
    x = 153,188,216,417.94/366,911.60
  6. Step 6: Final answer
    x = 417,507.15

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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.