Home / 213,000.89-319,431.96-70,808.03

Finding the Fourth Proportional to 213,000.89, 319,431.96 and 70,808.03

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Solution

The fourth proportional to 213,000.89, 319,431.96 and 70,808.03 is: 106,188.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,000.89 : 319,431.96 = 70,808.03 : x
  2. Step 2: Convert to fraction form
    213,000.89/319,431.96 = 70,808.03/x
  3. Step 3: Cross multiply
    213,000.89x = 319,431.96 × 70,808.03
  4. Step 4: Simplify right side
    213,000.89x = 22,618,346,209.48
  5. Step 5: Solve for x
    x = 22,618,346,209.48/213,000.89
  6. Step 6: Final answer
    x = 106,188.98

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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.