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Finding the Fourth Proportional to 216,304.48, 324,457.44 and 66,543.76

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Solution

The fourth proportional to 216,304.48, 324,457.44 and 66,543.76 is: 99,815.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,304.48 : 324,457.44 = 66,543.76 : x
  2. Step 2: Convert to fraction form
    216,304.48/324,457.44 = 66,543.76/x
  3. Step 3: Cross multiply
    216,304.48x = 324,457.44 × 66,543.76
  4. Step 4: Simplify right side
    216,304.48x = 21,590,618,017.57
  5. Step 5: Solve for x
    x = 21,590,618,017.57/216,304.48
  6. Step 6: Final answer
    x = 99,815.86

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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.