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Finding the Fourth Proportional to 308,556.51, 425,847.39 and 172,598.01

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Solution

The fourth proportional to 308,556.51, 425,847.39 and 172,598.01 is: 238,207.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,556.51 : 425,847.39 = 172,598.01 : x
  2. Step 2: Convert to fraction form
    308,556.51/425,847.39 = 172,598.01/x
  3. Step 3: Cross multiply
    308,556.51x = 425,847.39 × 172,598.01
  4. Step 4: Simplify right side
    308,556.51x = 73,500,412,077.69
  5. Step 5: Solve for x
    x = 73,500,412,077.69/308,556.51
  6. Step 6: Final answer
    x = 238,207.30

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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.