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Finding the Fourth Proportional to 325,662.70, 488,931.45 and 207,856.30

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Solution

The fourth proportional to 325,662.70, 488,931.45 and 207,856.30 is: 312,063.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,662.70 : 488,931.45 = 207,856.30 : x
  2. Step 2: Convert to fraction form
    325,662.70/488,931.45 = 207,856.30/x
  3. Step 3: Cross multiply
    325,662.70x = 488,931.45 × 207,856.30
  4. Step 4: Simplify right side
    325,662.70x = 101,627,482,150.64
  5. Step 5: Solve for x
    x = 101,627,482,150.64/325,662.70
  6. Step 6: Final answer
    x = 312,063.62

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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.