Home / 399,686.50-551,567.37-229,920.63

Finding the Fourth Proportional to 399,686.50, 551,567.37 and 229,920.63

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Solution

The fourth proportional to 399,686.50, 551,567.37 and 229,920.63 is: 317,290.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,686.50 : 551,567.37 = 229,920.63 : x
  2. Step 2: Convert to fraction form
    399,686.50/551,567.37 = 229,920.63/x
  3. Step 3: Cross multiply
    399,686.50x = 551,567.37 × 229,920.63
  4. Step 4: Simplify right side
    399,686.50x = 126,816,717,197.84
  5. Step 5: Solve for x
    x = 126,816,717,197.84/399,686.50
  6. Step 6: Final answer
    x = 317,290.47

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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.