Home / 215,829.20-323,743.80-171,214.40

Finding the Fourth Proportional to 215,829.20, 323,743.80 and 171,214.40

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Solution

The fourth proportional to 215,829.20, 323,743.80 and 171,214.40 is: 256,821.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,829.20 : 323,743.80 = 171,214.40 : x
  2. Step 2: Convert to fraction form
    215,829.20/323,743.80 = 171,214.40/x
  3. Step 3: Cross multiply
    215,829.20x = 323,743.80 × 171,214.40
  4. Step 4: Simplify right side
    215,829.20x = 55,429,600,470.72
  5. Step 5: Solve for x
    x = 55,429,600,470.72/215,829.20
  6. Step 6: Final answer
    x = 256,821.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.