Home / 280,891.08-387,629.64-153,566.64

Finding the Fourth Proportional to 280,891.08, 387,629.64 and 153,566.64

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Solution

The fourth proportional to 280,891.08, 387,629.64 and 153,566.64 is: 211,921.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,891.08 : 387,629.64 = 153,566.64 : x
  2. Step 2: Convert to fraction form
    280,891.08/387,629.64 = 153,566.64/x
  3. Step 3: Cross multiply
    280,891.08x = 387,629.64 × 153,566.64
  4. Step 4: Simplify right side
    280,891.08x = 59,526,981,379.21
  5. Step 5: Solve for x
    x = 59,526,981,379.21/280,891.08
  6. Step 6: Final answer
    x = 211,921.94

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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.