Home / 399,421.08-551,204.82-227,330.60

Finding the Fourth Proportional to 399,421.08, 551,204.82 and 227,330.60

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Solution

The fourth proportional to 399,421.08, 551,204.82 and 227,330.60 is: 313,718.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,421.08 : 551,204.82 = 227,330.60 : x
  2. Step 2: Convert to fraction form
    399,421.08/551,204.82 = 227,330.60/x
  3. Step 3: Cross multiply
    399,421.08x = 551,204.82 × 227,330.60
  4. Step 4: Simplify right side
    399,421.08x = 125,305,719,697.47
  5. Step 5: Solve for x
    x = 125,305,719,697.47/399,421.08
  6. Step 6: Final answer
    x = 313,718.34

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1.5x scale

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.