Home / 399,511.51-551,342.09-229,745.63

Finding the Fourth Proportional to 399,511.51, 551,342.09 and 229,745.63

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Solution

The fourth proportional to 399,511.51, 551,342.09 and 229,745.63 is: 317,058.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,511.51 : 551,342.09 = 229,745.63 : x
  2. Step 2: Convert to fraction form
    399,511.51/551,342.09 = 229,745.63/x
  3. Step 3: Cross multiply
    399,511.51x = 551,342.09 × 229,745.63
  4. Step 4: Simplify right side
    399,511.51x = 126,668,437,765.29
  5. Step 5: Solve for x
    x = 126,668,437,765.29/399,511.51
  6. Step 6: Final answer
    x = 317,058.30

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1.5x scale

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.