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Finding the Fourth Proportional to 307,995.42, 425,020.98 and 172,028.73

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Solution

The fourth proportional to 307,995.42, 425,020.98 and 172,028.73 is: 237,392.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,995.42 : 425,020.98 = 172,028.73 : x
  2. Step 2: Convert to fraction form
    307,995.42/425,020.98 = 172,028.73/x
  3. Step 3: Cross multiply
    307,995.42x = 425,020.98 × 172,028.73
  4. Step 4: Simplify right side
    307,995.42x = 73,115,819,412.76
  5. Step 5: Solve for x
    x = 73,115,819,412.76/307,995.42
  6. Step 6: Final answer
    x = 237,392.55

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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.