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Finding the Fourth Proportional to 399,273.60, 551,090.16 and 263,331.84

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Solution

The fourth proportional to 399,273.60, 551,090.16 and 263,331.84 is: 363,459.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,273.60 : 551,090.16 = 263,331.84 : x
  2. Step 2: Convert to fraction form
    399,273.60/551,090.16 = 263,331.84/x
  3. Step 3: Cross multiply
    399,273.60x = 551,090.16 × 263,331.84
  4. Step 4: Simplify right side
    399,273.60x = 145,119,585,838.69
  5. Step 5: Solve for x
    x = 145,119,585,838.69/399,273.60
  6. Step 6: Final answer
    x = 363,459.01

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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.