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Finding the Fourth Proportional to 617,903.20, 926,163.60 and 262,856.80

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Solution

The fourth proportional to 617,903.20, 926,163.60 and 262,856.80 is: 393,991.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,903.20 : 926,163.60 = 262,856.80 : x
  2. Step 2: Convert to fraction form
    617,903.20/926,163.60 = 262,856.80/x
  3. Step 3: Cross multiply
    617,903.20x = 926,163.60 × 262,856.80
  4. Step 4: Simplify right side
    617,903.20x = 243,448,400,172.48
  5. Step 5: Solve for x
    x = 243,448,400,172.48/617,903.20
  6. Step 6: Final answer
    x = 393,991.16

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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.