Home / 216,390.02-324,587.45-66,629.12

Finding the Fourth Proportional to 216,390.02, 324,587.45 and 66,629.12

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Solution

The fourth proportional to 216,390.02, 324,587.45 and 66,629.12 is: 99,944.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,390.02 : 324,587.45 = 66,629.12 : x
  2. Step 2: Convert to fraction form
    216,390.02/324,587.45 = 66,629.12/x
  3. Step 3: Cross multiply
    216,390.02x = 324,587.45 × 66,629.12
  4. Step 4: Simplify right side
    216,390.02x = 21,626,974,700.18
  5. Step 5: Solve for x
    x = 21,626,974,700.18/216,390.02
  6. Step 6: Final answer
    x = 99,944.42

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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.