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Finding the Fourth Proportional to 386,611.29, 533,526.44 and 214,529.90

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Solution

The fourth proportional to 386,611.29, 533,526.44 and 214,529.90 is: 296,052.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,611.29 : 533,526.44 = 214,529.90 : x
  2. Step 2: Convert to fraction form
    386,611.29/533,526.44 = 214,529.90/x
  3. Step 3: Cross multiply
    386,611.29x = 533,526.44 × 214,529.90
  4. Step 4: Simplify right side
    386,611.29x = 114,457,370,080.27
  5. Step 5: Solve for x
    x = 114,457,370,080.27/386,611.29
  6. Step 6: Final answer
    x = 296,052.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.