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Finding the Fourth Proportional to 393,029.42, 542,313.02 and 220,923.51

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Solution

The fourth proportional to 393,029.42, 542,313.02 and 220,923.51 is: 304,836.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,029.42 : 542,313.02 = 220,923.51 : x
  2. Step 2: Convert to fraction form
    393,029.42/542,313.02 = 220,923.51/x
  3. Step 3: Cross multiply
    393,029.42x = 542,313.02 × 220,923.51
  4. Step 4: Simplify right side
    393,029.42x = 119,809,693,185.54
  5. Step 5: Solve for x
    x = 119,809,693,185.54/393,029.42
  6. Step 6: Final answer
    x = 304,836.45

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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.