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Finding the Fourth Proportional to 400,355.22, 600,532.96 and 100,838.28

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Solution

The fourth proportional to 400,355.22, 600,532.96 and 100,838.28 is: 151,257.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,355.22 : 600,532.96 = 100,838.28 : x
  2. Step 2: Convert to fraction form
    400,355.22/600,532.96 = 100,838.28/x
  3. Step 3: Cross multiply
    400,355.22x = 600,532.96 × 100,838.28
  4. Step 4: Simplify right side
    400,355.22x = 60,556,710,769.71
  5. Step 5: Solve for x
    x = 60,556,710,769.71/400,355.22
  6. Step 6: Final answer
    x = 151,257.45

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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.