Home / 280,233.11-386,730.24-159,391.81

Finding the Fourth Proportional to 280,233.11, 386,730.24 and 159,391.81

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Solution

The fourth proportional to 280,233.11, 386,730.24 and 159,391.81 is: 219,965.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,233.11 : 386,730.24 = 159,391.81 : x
  2. Step 2: Convert to fraction form
    280,233.11/386,730.24 = 159,391.81/x
  3. Step 3: Cross multiply
    280,233.11x = 386,730.24 × 159,391.81
  4. Step 4: Simplify right side
    280,233.11x = 61,641,631,968.51
  5. Step 5: Solve for x
    x = 61,641,631,968.51/280,233.11
  6. Step 6: Final answer
    x = 219,965.55

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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.