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Finding the Fourth Proportional to 663,625.50, 995,441.90 and 164,989.50

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Solution

The fourth proportional to 663,625.50, 995,441.90 and 164,989.50 is: 247,485.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,625.50 : 995,441.90 = 164,989.50 : x
  2. Step 2: Convert to fraction form
    663,625.50/995,441.90 = 164,989.50/x
  3. Step 3: Cross multiply
    663,625.50x = 995,441.90 × 164,989.50
  4. Step 4: Simplify right side
    663,625.50x = 164,237,460,535.10
  5. Step 5: Solve for x
    x = 164,237,460,535.10/663,625.50
  6. Step 6: Final answer
    x = 247,485.16

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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.