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Finding the Fourth Proportional to 481,534.86, 722,597.52 and 215,520.32

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Solution

The fourth proportional to 481,534.86, 722,597.52 and 215,520.32 is: 323,412.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,534.86 : 722,597.52 = 215,520.32 : x
  2. Step 2: Convert to fraction form
    481,534.86/722,597.52 = 215,520.32/x
  3. Step 3: Cross multiply
    481,534.86x = 722,597.52 × 215,520.32
  4. Step 4: Simplify right side
    481,534.86x = 155,734,448,741.61
  5. Step 5: Solve for x
    x = 155,734,448,741.61/481,534.86
  6. Step 6: Final answer
    x = 323,412.62

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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.