Home / 256,157.10-383,746.05-137,789.10

Finding the Fourth Proportional to 256,157.10, 383,746.05 and 137,789.10

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Solution

The fourth proportional to 256,157.10, 383,746.05 and 137,789.10 is: 206,420.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,157.10 : 383,746.05 = 137,789.10 : x
  2. Step 2: Convert to fraction form
    256,157.10/383,746.05 = 137,789.10/x
  3. Step 3: Cross multiply
    256,157.10x = 383,746.05 × 137,789.10
  4. Step 4: Simplify right side
    256,157.10x = 52,876,022,858.06
  5. Step 5: Solve for x
    x = 52,876,022,858.06/256,157.10
  6. Step 6: Final answer
    x = 206,420.29

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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.