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Finding the Fourth Proportional to 325,420.70, 488,568.45 and 207,614.30

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Solution

The fourth proportional to 325,420.70, 488,568.45 and 207,614.30 is: 311,700.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,420.70 : 488,568.45 = 207,614.30 : x
  2. Step 2: Convert to fraction form
    325,420.70/488,568.45 = 207,614.30/x
  3. Step 3: Cross multiply
    325,420.70x = 488,568.45 × 207,614.30
  4. Step 4: Simplify right side
    325,420.70x = 101,433,796,748.84
  5. Step 5: Solve for x
    x = 101,433,796,748.84/325,420.70
  6. Step 6: Final answer
    x = 311,700.51

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1.5x scale

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.