Home / 399,306.18-551,028.06-218,014.77

Finding the Fourth Proportional to 399,306.18, 551,028.06 and 218,014.77

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Solution

The fourth proportional to 399,306.18, 551,028.06 and 218,014.77 is: 300,852.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,306.18 : 551,028.06 = 218,014.77 : x
  2. Step 2: Convert to fraction form
    399,306.18/551,028.06 = 218,014.77/x
  3. Step 3: Cross multiply
    399,306.18x = 551,028.06 × 218,014.77
  4. Step 4: Simplify right side
    399,306.18x = 120,132,255,764.45
  5. Step 5: Solve for x
    x = 120,132,255,764.45/399,306.18
  6. Step 6: Final answer
    x = 300,852.48

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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.