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Finding the Fourth Proportional to 399,598.89, 551,446.44 and 220,750.89

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Solution

The fourth proportional to 399,598.89, 551,446.44 and 220,750.89 is: 304,636.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,598.89 : 551,446.44 = 220,750.89 : x
  2. Step 2: Convert to fraction form
    399,598.89/551,446.44 = 220,750.89/x
  3. Step 3: Cross multiply
    399,598.89x = 551,446.44 × 220,750.89
  4. Step 4: Simplify right side
    399,598.89x = 121,732,292,417.33
  5. Step 5: Solve for x
    x = 121,732,292,417.33/399,598.89
  6. Step 6: Final answer
    x = 304,636.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.