Home / 229,985.35-317,379.30-129,383.35

Finding the Fourth Proportional to 229,985.35, 317,379.30 and 129,383.35

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Solution

The fourth proportional to 229,985.35, 317,379.30 and 129,383.35 is: 178,548.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,985.35 : 317,379.30 = 129,383.35 : x
  2. Step 2: Convert to fraction form
    229,985.35/317,379.30 = 129,383.35/x
  3. Step 3: Cross multiply
    229,985.35x = 317,379.30 × 129,383.35
  4. Step 4: Simplify right side
    229,985.35x = 41,063,597,054.66
  5. Step 5: Solve for x
    x = 41,063,597,054.66/229,985.35
  6. Step 6: Final answer
    x = 178,548.75

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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.