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Finding the Fourth Proportional to 216,457.59, 324,686.39 and 131,085.65

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Solution

The fourth proportional to 216,457.59, 324,686.39 and 131,085.65 is: 196,628.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,457.59 : 324,686.39 = 131,085.65 : x
  2. Step 2: Convert to fraction form
    216,457.59/324,686.39 = 131,085.65/x
  3. Step 3: Cross multiply
    216,457.59x = 324,686.39 × 131,085.65
  4. Step 4: Simplify right side
    216,457.59x = 42,561,726,635.59
  5. Step 5: Solve for x
    x = 42,561,726,635.59/216,457.59
  6. Step 6: Final answer
    x = 196,628.48

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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.