Home / 399,435.39-551,225.21-218,152.63

Finding the Fourth Proportional to 399,435.39, 551,225.21 and 218,152.63

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Solution

The fourth proportional to 399,435.39, 551,225.21 and 218,152.63 is: 301,053.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,435.39 : 551,225.21 = 218,152.63 : x
  2. Step 2: Convert to fraction form
    399,435.39/551,225.21 = 218,152.63/x
  3. Step 3: Cross multiply
    399,435.39x = 551,225.21 × 218,152.63
  4. Step 4: Simplify right side
    399,435.39x = 120,251,229,283.80
  5. Step 5: Solve for x
    x = 120,251,229,283.80/399,435.39
  6. Step 6: Final answer
    x = 301,053.02

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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.