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Finding the Fourth Proportional to 663,661.50, 995,495.90 and 165,025.50

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Solution

The fourth proportional to 663,661.50, 995,495.90 and 165,025.50 is: 247,539.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,661.50 : 995,495.90 = 165,025.50 : x
  2. Step 2: Convert to fraction form
    663,661.50/995,495.90 = 165,025.50/x
  3. Step 3: Cross multiply
    663,661.50x = 995,495.90 × 165,025.50
  4. Step 4: Simplify right side
    663,661.50x = 164,282,207,820.32
  5. Step 5: Solve for x
    x = 164,282,207,820.32/663,661.50
  6. Step 6: Final answer
    x = 247,539.16

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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.