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Finding the Fourth Proportional to 270,390, 405,585 and 73,398

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Solution

The fourth proportional to 270,390, 405,585 and 73,398 is: 110,097

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,390 : 405,585 = 73,398 : x
  2. Step 2: Convert to fraction form
    270,390/405,585 = 73,398/x
  3. Step 3: Cross multiply
    270,390x = 405,585 × 73,398
  4. Step 4: Simplify right side
    270,390x = 29,769,127,830
  5. Step 5: Solve for x
    x = 29,769,127,830/270,390
  6. Step 6: Final answer
    x = 110,097

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.