Home / 352,123.21-528,175.40-99,421.03

Finding the Fourth Proportional to 352,123.21, 528,175.40 and 99,421.03

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Solution

The fourth proportional to 352,123.21, 528,175.40 and 99,421.03 is: 149,128.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,123.21 : 528,175.40 = 99,421.03 : x
  2. Step 2: Convert to fraction form
    352,123.21/528,175.40 = 99,421.03/x
  3. Step 3: Cross multiply
    352,123.21x = 528,175.40 × 99,421.03
  4. Step 4: Simplify right side
    352,123.21x = 52,511,740,471.12
  5. Step 5: Solve for x
    x = 52,511,740,471.12/352,123.21
  6. Step 6: Final answer
    x = 149,128.88

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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.