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Finding the Fourth Proportional to 245,359.45, 338,594.12 and 136,464.78

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Solution

The fourth proportional to 245,359.45, 338,594.12 and 136,464.78 is: 188,320.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,359.45 : 338,594.12 = 136,464.78 : x
  2. Step 2: Convert to fraction form
    245,359.45/338,594.12 = 136,464.78/x
  3. Step 3: Cross multiply
    245,359.45x = 338,594.12 × 136,464.78
  4. Step 4: Simplify right side
    245,359.45x = 46,206,172,095.09
  5. Step 5: Solve for x
    x = 46,206,172,095.09/245,359.45
  6. Step 6: Final answer
    x = 188,320.33

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1.5x scale

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.