Home / 315,867.72-435,918.54-178,080.66

Finding the Fourth Proportional to 315,867.72, 435,918.54 and 178,080.66

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Solution

The fourth proportional to 315,867.72, 435,918.54 and 178,080.66 is: 245,763.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,867.72 : 435,918.54 = 178,080.66 : x
  2. Step 2: Convert to fraction form
    315,867.72/435,918.54 = 178,080.66/x
  3. Step 3: Cross multiply
    315,867.72x = 435,918.54 × 178,080.66
  4. Step 4: Simplify right side
    315,867.72x = 77,628,661,309.44
  5. Step 5: Solve for x
    x = 77,628,661,309.44/315,867.72
  6. Step 6: Final answer
    x = 245,763.20

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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.