Home / 399,329.22-551,085.66-218,052.63

Finding the Fourth Proportional to 399,329.22, 551,085.66 and 218,052.63

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Solution

The fourth proportional to 399,329.22, 551,085.66 and 218,052.63 is: 300,918.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,329.22 : 551,085.66 = 218,052.63 : x
  2. Step 2: Convert to fraction form
    399,329.22/551,085.66 = 218,052.63/x
  3. Step 3: Cross multiply
    399,329.22x = 551,085.66 × 218,052.63
  4. Step 4: Simplify right side
    399,329.22x = 120,165,677,518.29
  5. Step 5: Solve for x
    x = 120,165,677,518.29/399,329.22
  6. Step 6: Final answer
    x = 300,918.82

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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.