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Finding the Fourth Proportional to 483,318.90, 724,287.15 and 355,965.30

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Solution

The fourth proportional to 483,318.90, 724,287.15 and 355,965.30 is: 533,438.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,318.90 : 724,287.15 = 355,965.30 : x
  2. Step 2: Convert to fraction form
    483,318.90/724,287.15 = 355,965.30/x
  3. Step 3: Cross multiply
    483,318.90x = 724,287.15 × 355,965.30
  4. Step 4: Simplify right side
    483,318.90x = 257,821,092,635.90
  5. Step 5: Solve for x
    x = 257,821,092,635.90/483,318.90
  6. Step 6: Final answer
    x = 533,438.88

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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.