Home / 257,090.10-385,635.15-173,109.30

Finding the Fourth Proportional to 257,090.10, 385,635.15 and 173,109.30

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Solution

The fourth proportional to 257,090.10, 385,635.15 and 173,109.30 is: 259,663.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,090.10 : 385,635.15 = 173,109.30 : x
  2. Step 2: Convert to fraction form
    257,090.10/385,635.15 = 173,109.30/x
  3. Step 3: Cross multiply
    257,090.10x = 385,635.15 × 173,109.30
  4. Step 4: Simplify right side
    257,090.10x = 66,757,030,871.90
  5. Step 5: Solve for x
    x = 66,757,030,871.90/257,090.10
  6. Step 6: Final answer
    x = 259,663.95

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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.