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Finding the Fourth Proportional to 302,739, 417,084.30 and 239,053.56

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Solution

The fourth proportional to 302,739, 417,084.30 and 239,053.56 is: 329,344.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,739 : 417,084.30 = 239,053.56 : x
  2. Step 2: Convert to fraction form
    302,739/417,084.30 = 239,053.56/x
  3. Step 3: Cross multiply
    302,739x = 417,084.30 × 239,053.56
  4. Step 4: Simplify right side
    302,739x = 99,705,486,735.11
  5. Step 5: Solve for x
    x = 99,705,486,735.11/302,739
  6. Step 6: Final answer
    x = 329,344.71

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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.