Home / 343,774.27-515,133.96-143,985.34

Finding the Fourth Proportional to 343,774.27, 515,133.96 and 143,985.34

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Solution

The fourth proportional to 343,774.27, 515,133.96 and 143,985.34 is: 215,757.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,774.27 : 515,133.96 = 143,985.34 : x
  2. Step 2: Convert to fraction form
    343,774.27/515,133.96 = 143,985.34/x
  3. Step 3: Cross multiply
    343,774.27x = 515,133.96 × 143,985.34
  4. Step 4: Simplify right side
    343,774.27x = 74,171,738,376.15
  5. Step 5: Solve for x
    x = 74,171,738,376.15/343,774.27
  6. Step 6: Final answer
    x = 215,757.10

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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.