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Finding the Fourth Proportional to 353,990.24, 529,737.60 and 220,932.80

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Solution

The fourth proportional to 353,990.24, 529,737.60 and 220,932.80 is: 330,620.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,990.24 : 529,737.60 = 220,932.80 : x
  2. Step 2: Convert to fraction form
    353,990.24/529,737.60 = 220,932.80/x
  3. Step 3: Cross multiply
    353,990.24x = 529,737.60 × 220,932.80
  4. Step 4: Simplify right side
    353,990.24x = 117,036,411,233.28
  5. Step 5: Solve for x
    x = 117,036,411,233.28/353,990.24
  6. Step 6: Final answer
    x = 330,620.45

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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.