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Finding the Fourth Proportional to 399,678.96, 551,577.96 and 229,938.60

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Solution

The fourth proportional to 399,678.96, 551,577.96 and 229,938.60 is: 317,327.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,678.96 : 551,577.96 = 229,938.60 : x
  2. Step 2: Convert to fraction form
    399,678.96/551,577.96 = 229,938.60/x
  3. Step 3: Cross multiply
    399,678.96x = 551,577.96 × 229,938.60
  4. Step 4: Simplify right side
    399,678.96x = 126,829,063,913.26
  5. Step 5: Solve for x
    x = 126,829,063,913.26/399,678.96
  6. Step 6: Final answer
    x = 317,327.35

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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.