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Finding the Fourth Proportional to 216,670.57, 325,153.48 and 76,429.20

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Solution

The fourth proportional to 216,670.57, 325,153.48 and 76,429.20 is: 114,695.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,670.57 : 325,153.48 = 76,429.20 : x
  2. Step 2: Convert to fraction form
    216,670.57/325,153.48 = 76,429.20/x
  3. Step 3: Cross multiply
    216,670.57x = 325,153.48 × 76,429.20
  4. Step 4: Simplify right side
    216,670.57x = 24,851,218,674.21
  5. Step 5: Solve for x
    x = 24,851,218,674.21/216,670.57
  6. Step 6: Final answer
    x = 114,695.87

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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.