Home / 280,696.22-387,370.35-153,380.01

Finding the Fourth Proportional to 280,696.22, 387,370.35 and 153,380.01

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Solution

The fourth proportional to 280,696.22, 387,370.35 and 153,380.01 is: 211,669.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,696.22 : 387,370.35 = 153,380.01 : x
  2. Step 2: Convert to fraction form
    280,696.22/387,370.35 = 153,380.01/x
  3. Step 3: Cross multiply
    280,696.22x = 387,370.35 × 153,380.01
  4. Step 4: Simplify right side
    280,696.22x = 59,414,869,609.34
  5. Step 5: Solve for x
    x = 59,414,869,609.34/280,696.22
  6. Step 6: Final answer
    x = 211,669.65

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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.