Home / 216,457.40-324,718.35-66,685.16

Finding the Fourth Proportional to 216,457.40, 324,718.35 and 66,685.16

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Solution

The fourth proportional to 216,457.40, 324,718.35 and 66,685.16 is: 100,037.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,457.40 : 324,718.35 = 66,685.16 : x
  2. Step 2: Convert to fraction form
    216,457.40/324,718.35 = 66,685.16/x
  3. Step 3: Cross multiply
    216,457.40x = 324,718.35 × 66,685.16
  4. Step 4: Simplify right side
    216,457.40x = 21,653,895,124.69
  5. Step 5: Solve for x
    x = 21,653,895,124.69/216,457.40
  6. Step 6: Final answer
    x = 100,037.68

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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.