Home / 315,845.08-435,943.65-179,959.21

Finding the Fourth Proportional to 315,845.08, 435,943.65 and 179,959.21

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Solution

The fourth proportional to 315,845.08, 435,943.65 and 179,959.21 is: 248,387.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,845.08 : 435,943.65 = 179,959.21 : x
  2. Step 2: Convert to fraction form
    315,845.08/435,943.65 = 179,959.21/x
  3. Step 3: Cross multiply
    315,845.08x = 435,943.65 × 179,959.21
  4. Step 4: Simplify right side
    315,845.08x = 78,452,074,858.52
  5. Step 5: Solve for x
    x = 78,452,074,858.52/315,845.08
  6. Step 6: Final answer
    x = 248,387.83

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1.5x scale

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.