Home / 399,660.32-551,514.82-218,378.48

Finding the Fourth Proportional to 399,660.32, 551,514.82 and 218,378.48

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Solution

The fourth proportional to 399,660.32, 551,514.82 and 218,378.48 is: 301,353.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,660.32 : 551,514.82 = 218,378.48 : x
  2. Step 2: Convert to fraction form
    399,660.32/551,514.82 = 218,378.48/x
  3. Step 3: Cross multiply
    399,660.32x = 551,514.82 × 218,378.48
  4. Step 4: Simplify right side
    399,660.32x = 120,438,968,089.07
  5. Step 5: Solve for x
    x = 120,438,968,089.07/399,660.32
  6. Step 6: Final answer
    x = 301,353.33

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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.