Home / 308,135.37-425,218.86-172,170.43

Finding the Fourth Proportional to 308,135.37, 425,218.86 and 172,170.43

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Solution

The fourth proportional to 308,135.37, 425,218.86 and 172,170.43 is: 237,590.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,135.37 : 425,218.86 = 172,170.43 : x
  2. Step 2: Convert to fraction form
    308,135.37/425,218.86 = 172,170.43/x
  3. Step 3: Cross multiply
    308,135.37x = 425,218.86 × 172,170.43
  4. Step 4: Simplify right side
    308,135.37x = 73,210,114,501.83
  5. Step 5: Solve for x
    x = 73,210,114,501.83/308,135.37
  6. Step 6: Final answer
    x = 237,590.76

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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.