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Finding the Fourth Proportional to 426,503.92, 639,756.64 and 110,960.32

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Solution

The fourth proportional to 426,503.92, 639,756.64 and 110,960.32 is: 166,440.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,503.92 : 639,756.64 = 110,960.32 : x
  2. Step 2: Convert to fraction form
    426,503.92/639,756.64 = 110,960.32/x
  3. Step 3: Cross multiply
    426,503.92x = 639,756.64 × 110,960.32
  4. Step 4: Simplify right side
    426,503.92x = 70,987,601,496.52
  5. Step 5: Solve for x
    x = 70,987,601,496.52/426,503.92
  6. Step 6: Final answer
    x = 166,440.68

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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.