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Finding the Fourth Proportional to 257,160.56, 354,879.22 and 143,985.20

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Solution

The fourth proportional to 257,160.56, 354,879.22 and 143,985.20 is: 198,698.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,160.56 : 354,879.22 = 143,985.20 : x
  2. Step 2: Convert to fraction form
    257,160.56/354,879.22 = 143,985.20/x
  3. Step 3: Cross multiply
    257,160.56x = 354,879.22 × 143,985.20
  4. Step 4: Simplify right side
    257,160.56x = 51,097,355,467.54
  5. Step 5: Solve for x
    x = 51,097,355,467.54/257,160.56
  6. Step 6: Final answer
    x = 198,698.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.