Home / 259,985.40-390,269.70-201,082.20

Finding the Fourth Proportional to 259,985.40, 390,269.70 and 201,082.20

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Solution

The fourth proportional to 259,985.40, 390,269.70 and 201,082.20 is: 301,848.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,985.40 : 390,269.70 = 201,082.20 : x
  2. Step 2: Convert to fraction form
    259,985.40/390,269.70 = 201,082.20/x
  3. Step 3: Cross multiply
    259,985.40x = 390,269.70 × 201,082.20
  4. Step 4: Simplify right side
    259,985.40x = 78,476,289,869.34
  5. Step 5: Solve for x
    x = 78,476,289,869.34/259,985.40
  6. Step 6: Final answer
    x = 301,848.83

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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.