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Finding the Fourth Proportional to 399,595.68, 551,419.92 and 229,832.64

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Solution

The fourth proportional to 399,595.68, 551,419.92 and 229,832.64 is: 317,156.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,595.68 : 551,419.92 = 229,832.64 : x
  2. Step 2: Convert to fraction form
    399,595.68/551,419.92 = 229,832.64/x
  3. Step 3: Cross multiply
    399,595.68x = 551,419.92 × 229,832.64
  4. Step 4: Simplify right side
    399,595.68x = 126,734,295,962.19
  5. Step 5: Solve for x
    x = 126,734,295,962.19/399,595.68
  6. Step 6: Final answer
    x = 317,156.32

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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.