Home / 257,106.29-385,805.25-138,775.01

Finding the Fourth Proportional to 257,106.29, 385,805.25 and 138,775.01

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Solution

The fourth proportional to 257,106.29, 385,805.25 and 138,775.01 is: 208,241.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,106.29 : 385,805.25 = 138,775.01 : x
  2. Step 2: Convert to fraction form
    257,106.29/385,805.25 = 138,775.01/x
  3. Step 3: Cross multiply
    257,106.29x = 385,805.25 × 138,775.01
  4. Step 4: Simplify right side
    257,106.29x = 53,540,125,497.78
  5. Step 5: Solve for x
    x = 53,540,125,497.78/257,106.29
  6. Step 6: Final answer
    x = 208,241.22

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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.