Home / 257,911.58-387,017.94-108,140.42

Finding the Fourth Proportional to 257,911.58, 387,017.94 and 108,140.42

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Solution

The fourth proportional to 257,911.58, 387,017.94 and 108,140.42 is: 162,273.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,911.58 : 387,017.94 = 108,140.42 : x
  2. Step 2: Convert to fraction form
    257,911.58/387,017.94 = 108,140.42/x
  3. Step 3: Cross multiply
    257,911.58x = 387,017.94 × 108,140.42
  4. Step 4: Simplify right side
    257,911.58x = 41,852,282,579.13
  5. Step 5: Solve for x
    x = 41,852,282,579.13/257,911.58
  6. Step 6: Final answer
    x = 162,273.76

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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.