Home / 253,439.96-380,244.36-84,977

Finding the Fourth Proportional to 253,439.96, 380,244.36 and 84,977

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Solution

The fourth proportional to 253,439.96, 380,244.36 and 84,977 is: 127,493.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,439.96 : 380,244.36 = 84,977 : x
  2. Step 2: Convert to fraction form
    253,439.96/380,244.36 = 84,977/x
  3. Step 3: Cross multiply
    253,439.96x = 380,244.36 × 84,977
  4. Step 4: Simplify right side
    253,439.96x = 32,312,024,979.72
  5. Step 5: Solve for x
    x = 32,312,024,979.72/253,439.96
  6. Step 6: Final answer
    x = 127,493.81

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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.