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Finding the Fourth Proportional to 216,543.72, 324,729.54 and 83,350.20

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Solution

The fourth proportional to 216,543.72, 324,729.54 and 83,350.20 is: 124,992.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,543.72 : 324,729.54 = 83,350.20 : x
  2. Step 2: Convert to fraction form
    216,543.72/324,729.54 = 83,350.20/x
  3. Step 3: Cross multiply
    216,543.72x = 324,729.54 × 83,350.20
  4. Step 4: Simplify right side
    216,543.72x = 27,066,272,104.91
  5. Step 5: Solve for x
    x = 27,066,272,104.91/216,543.72
  6. Step 6: Final answer
    x = 124,992.18

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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.