Home / 280,185.32-386,639.97-159,356.00

Finding the Fourth Proportional to 280,185.32, 386,639.97 and 159,356.00

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Solution

The fourth proportional to 280,185.32, 386,639.97 and 159,356.00 is: 219,902.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,185.32 : 386,639.97 = 159,356.00 : x
  2. Step 2: Convert to fraction form
    280,185.32/386,639.97 = 159,356.00/x
  3. Step 3: Cross multiply
    280,185.32x = 386,639.97 × 159,356.00
  4. Step 4: Simplify right side
    280,185.32x = 61,613,397,126.12
  5. Step 5: Solve for x
    x = 61,613,397,126.12/280,185.32
  6. Step 6: Final answer
    x = 219,902.31

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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.