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Finding the Fourth Proportional to 278,851.10, 417,815.85 and 237,379.10

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Solution

The fourth proportional to 278,851.10, 417,815.85 and 237,379.10 is: 355,676.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,851.10 : 417,815.85 = 237,379.10 : x
  2. Step 2: Convert to fraction form
    278,851.10/417,815.85 = 237,379.10/x
  3. Step 3: Cross multiply
    278,851.10x = 417,815.85 × 237,379.10
  4. Step 4: Simplify right side
    278,851.10x = 99,180,750,438.74
  5. Step 5: Solve for x
    x = 99,180,750,438.74/278,851.10
  6. Step 6: Final answer
    x = 355,676.38

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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.