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Finding the Fourth Proportional to 203,480.51, 280,479.51 and 160,390.13

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Solution

The fourth proportional to 203,480.51, 280,479.51 and 160,390.13 is: 221,083.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,480.51 : 280,479.51 = 160,390.13 : x
  2. Step 2: Convert to fraction form
    203,480.51/280,479.51 = 160,390.13/x
  3. Step 3: Cross multiply
    203,480.51x = 280,479.51 × 160,390.13
  4. Step 4: Simplify right side
    203,480.51x = 44,986,143,668.84
  5. Step 5: Solve for x
    x = 44,986,143,668.84/203,480.51
  6. Step 6: Final answer
    x = 221,083.31

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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.