Home / 399,421.52-551,205.45-227,331.05

Finding the Fourth Proportional to 399,421.52, 551,205.45 and 227,331.05

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Solution

The fourth proportional to 399,421.52, 551,205.45 and 227,331.05 is: 313,718.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,421.52 : 551,205.45 = 227,331.05 : x
  2. Step 2: Convert to fraction form
    399,421.52/551,205.45 = 227,331.05/x
  3. Step 3: Cross multiply
    399,421.52x = 551,205.45 × 227,331.05
  4. Step 4: Simplify right side
    399,421.52x = 125,306,110,958.20
  5. Step 5: Solve for x
    x = 125,306,110,958.20/399,421.52
  6. Step 6: Final answer
    x = 313,718.98

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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.