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Finding the Fourth Proportional to 325,628.20, 488,442.30 and 293,487.40

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Solution

The fourth proportional to 325,628.20, 488,442.30 and 293,487.40 is: 440,231.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,628.20 : 488,442.30 = 293,487.40 : x
  2. Step 2: Convert to fraction form
    325,628.20/488,442.30 = 293,487.40/x
  3. Step 3: Cross multiply
    325,628.20x = 488,442.30 × 293,487.40
  4. Step 4: Simplify right side
    325,628.20x = 143,351,660,677.02
  5. Step 5: Solve for x
    x = 143,351,660,677.02/325,628.20
  6. Step 6: Final answer
    x = 440,231.10

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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.