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Finding the Fourth Proportional to 393,000.42, 589,536.27 and 108,708.78

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Solution

The fourth proportional to 393,000.42, 589,536.27 and 108,708.78 is: 163,073.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,000.42 : 589,536.27 = 108,708.78 : x
  2. Step 2: Convert to fraction form
    393,000.42/589,536.27 = 108,708.78/x
  3. Step 3: Cross multiply
    393,000.42x = 589,536.27 × 108,708.78
  4. Step 4: Simplify right side
    393,000.42x = 64,087,768,677.45
  5. Step 5: Solve for x
    x = 64,087,768,677.45/393,000.42
  6. Step 6: Final answer
    x = 163,073.03

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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.