Home / 213,518.79-320,291.39-71,376.86

Finding the Fourth Proportional to 213,518.79, 320,291.39 and 71,376.86

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Solution

The fourth proportional to 213,518.79, 320,291.39 and 71,376.86 is: 107,069.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,518.79 : 320,291.39 = 71,376.86 : x
  2. Step 2: Convert to fraction form
    213,518.79/320,291.39 = 71,376.86/x
  3. Step 3: Cross multiply
    213,518.79x = 320,291.39 × 71,376.86
  4. Step 4: Simplify right side
    213,518.79x = 22,861,392,280.22
  5. Step 5: Solve for x
    x = 22,861,392,280.22/213,518.79
  6. Step 6: Final answer
    x = 107,069.70

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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.