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Finding the Fourth Proportional to 353,729.28, 530,614.68 and 100,990.32

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Solution

The fourth proportional to 353,729.28, 530,614.68 and 100,990.32 is: 151,491.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,729.28 : 530,614.68 = 100,990.32 : x
  2. Step 2: Convert to fraction form
    353,729.28/530,614.68 = 100,990.32/x
  3. Step 3: Cross multiply
    353,729.28x = 530,614.68 × 100,990.32
  4. Step 4: Simplify right side
    353,729.28x = 53,586,946,329.90
  5. Step 5: Solve for x
    x = 53,586,946,329.90/353,729.28
  6. Step 6: Final answer
    x = 151,491.41

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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.