Home / 253,620.05-380,488.37-76,130.42

Finding the Fourth Proportional to 253,620.05, 380,488.37 and 76,130.42

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Solution

The fourth proportional to 253,620.05, 380,488.37 and 76,130.42 is: 114,213.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,620.05 : 380,488.37 = 76,130.42 : x
  2. Step 2: Convert to fraction form
    253,620.05/380,488.37 = 76,130.42/x
  3. Step 3: Cross multiply
    253,620.05x = 380,488.37 × 76,130.42
  4. Step 4: Simplify right side
    253,620.05x = 28,966,737,130.12
  5. Step 5: Solve for x
    x = 28,966,737,130.12/253,620.05
  6. Step 6: Final answer
    x = 114,213.12

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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.