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Finding the Fourth Proportional to 216,576.60, 324,901.80 and 66,814.08

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Solution

The fourth proportional to 216,576.60, 324,901.80 and 66,814.08 is: 100,232.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,576.60 : 324,901.80 = 66,814.08 : x
  2. Step 2: Convert to fraction form
    216,576.60/324,901.80 = 66,814.08/x
  3. Step 3: Cross multiply
    216,576.60x = 324,901.80 × 66,814.08
  4. Step 4: Simplify right side
    216,576.60x = 21,708,014,857.34
  5. Step 5: Solve for x
    x = 21,708,014,857.34/216,576.60
  6. Step 6: Final answer
    x = 100,232.50

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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.