Home / 216,569.74-324,885.12-66,822.20

Finding the Fourth Proportional to 216,569.74, 324,885.12 and 66,822.20

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Solution

The fourth proportional to 216,569.74, 324,885.12 and 66,822.20 is: 100,242.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,569.74 : 324,885.12 = 66,822.20 : x
  2. Step 2: Convert to fraction form
    216,569.74/324,885.12 = 66,822.20/x
  3. Step 3: Cross multiply
    216,569.74x = 324,885.12 × 66,822.20
  4. Step 4: Simplify right side
    216,569.74x = 21,709,538,465.66
  5. Step 5: Solve for x
    x = 21,709,538,465.66/216,569.74
  6. Step 6: Final answer
    x = 100,242.71

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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.