Home / 399,701.44-551,581.30-218,409.19

Finding the Fourth Proportional to 399,701.44, 551,581.30 and 218,409.19

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Solution

The fourth proportional to 399,701.44, 551,581.30 and 218,409.19 is: 301,401.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,701.44 : 551,581.30 = 218,409.19 : x
  2. Step 2: Convert to fraction form
    399,701.44/551,581.30 = 218,409.19/x
  3. Step 3: Cross multiply
    399,701.44x = 551,581.30 × 218,409.19
  4. Step 4: Simplify right side
    399,701.44x = 120,470,424,952.15
  5. Step 5: Solve for x
    x = 120,470,424,952.15/399,701.44
  6. Step 6: Final answer
    x = 301,401.03

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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.