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Finding the Fourth Proportional to 325,350.69, 488,341.13 and 156,989.40

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Solution

The fourth proportional to 325,350.69, 488,341.13 and 156,989.40 is: 235,636.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,350.69 : 488,341.13 = 156,989.40 : x
  2. Step 2: Convert to fraction form
    325,350.69/488,341.13 = 156,989.40/x
  3. Step 3: Cross multiply
    325,350.69x = 488,341.13 × 156,989.40
  4. Step 4: Simplify right side
    325,350.69x = 76,664,380,209.08
  5. Step 5: Solve for x
    x = 76,664,380,209.08/325,350.69
  6. Step 6: Final answer
    x = 235,636.14

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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.