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Finding the Fourth Proportional to 398,659.14, 550,212.71 and 237,607.61

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Solution

The fourth proportional to 398,659.14, 550,212.71 and 237,607.61 is: 327,936.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,659.14 : 550,212.71 = 237,607.61 : x
  2. Step 2: Convert to fraction form
    398,659.14/550,212.71 = 237,607.61/x
  3. Step 3: Cross multiply
    398,659.14x = 550,212.71 × 237,607.61
  4. Step 4: Simplify right side
    398,659.14x = 130,734,723,075.62
  5. Step 5: Solve for x
    x = 130,734,723,075.62/398,659.14
  6. Step 6: Final answer
    x = 327,936.10

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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.