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Finding the Fourth Proportional to 216,655.12, 324,952.62 and 66,900.34

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Solution

The fourth proportional to 216,655.12, 324,952.62 and 66,900.34 is: 100,341.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,655.12 : 324,952.62 = 66,900.34 : x
  2. Step 2: Convert to fraction form
    216,655.12/324,952.62 = 66,900.34/x
  3. Step 3: Cross multiply
    216,655.12x = 324,952.62 × 66,900.34
  4. Step 4: Simplify right side
    216,655.12x = 21,739,440,761.89
  5. Step 5: Solve for x
    x = 21,739,440,761.89/216,655.12
  6. Step 6: Final answer
    x = 100,341.23

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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.