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Finding the Fourth Proportional to 216,337.60, 324,543.20 and 66,574.48

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Solution

The fourth proportional to 216,337.60, 324,543.20 and 66,574.48 is: 99,873.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,337.60 : 324,543.20 = 66,574.48 : x
  2. Step 2: Convert to fraction form
    216,337.60/324,543.20 = 66,574.48/x
  3. Step 3: Cross multiply
    216,337.60x = 324,543.20 × 66,574.48
  4. Step 4: Simplify right side
    216,337.60x = 21,606,294,777.54
  5. Step 5: Solve for x
    x = 21,606,294,777.54/216,337.60
  6. Step 6: Final answer
    x = 99,873.04

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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.