Home / 280,972.96-387,749.43-160,111.66

Finding the Fourth Proportional to 280,972.96, 387,749.43 and 160,111.66

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Solution

The fourth proportional to 280,972.96, 387,749.43 and 160,111.66 is: 220,957.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,972.96 : 387,749.43 = 160,111.66 : x
  2. Step 2: Convert to fraction form
    280,972.96/387,749.43 = 160,111.66/x
  3. Step 3: Cross multiply
    280,972.96x = 387,749.43 × 160,111.66
  4. Step 4: Simplify right side
    280,972.96x = 62,083,204,901.35
  5. Step 5: Solve for x
    x = 62,083,204,901.35/280,972.96
  6. Step 6: Final answer
    x = 220,957.93

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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.