Home / 343,485.14-515,229.02-143,665.35

Finding the Fourth Proportional to 343,485.14, 515,229.02 and 143,665.35

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Solution

The fourth proportional to 343,485.14, 515,229.02 and 143,665.35 is: 215,498.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,485.14 : 515,229.02 = 143,665.35 : x
  2. Step 2: Convert to fraction form
    343,485.14/515,229.02 = 143,665.35/x
  3. Step 3: Cross multiply
    343,485.14x = 515,229.02 × 143,665.35
  4. Step 4: Simplify right side
    343,485.14x = 74,020,557,488.46
  5. Step 5: Solve for x
    x = 74,020,557,488.46/343,485.14
  6. Step 6: Final answer
    x = 215,498.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.