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Finding the Fourth Proportional to 216,005.20, 324,007.80 and 121,526.80

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Solution

The fourth proportional to 216,005.20, 324,007.80 and 121,526.80 is: 182,290.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,005.20 : 324,007.80 = 121,526.80 : x
  2. Step 2: Convert to fraction form
    216,005.20/324,007.80 = 121,526.80/x
  3. Step 3: Cross multiply
    216,005.20x = 324,007.80 × 121,526.80
  4. Step 4: Simplify right side
    216,005.20x = 39,375,631,109.04
  5. Step 5: Solve for x
    x = 39,375,631,109.04/216,005.20
  6. Step 6: Final answer
    x = 182,290.20

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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.