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Finding the Fourth Proportional to 216,463.83, 324,738.27 and 66,678.63

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Solution

The fourth proportional to 216,463.83, 324,738.27 and 66,678.63 is: 100,031.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,463.83 : 324,738.27 = 66,678.63 : x
  2. Step 2: Convert to fraction form
    216,463.83/324,738.27 = 66,678.63/x
  3. Step 3: Cross multiply
    216,463.83x = 324,738.27 × 66,678.63
  4. Step 4: Simplify right side
    216,463.83x = 21,653,102,952.17
  5. Step 5: Solve for x
    x = 21,653,102,952.17/216,463.83
  6. Step 6: Final answer
    x = 100,031.04

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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.