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Finding the Fourth Proportional to 270,584.75, 405,898.29 and 90,670.79

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Solution

The fourth proportional to 270,584.75, 405,898.29 and 90,670.79 is: 136,013.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,584.75 : 405,898.29 = 90,670.79 : x
  2. Step 2: Convert to fraction form
    270,584.75/405,898.29 = 90,670.79/x
  3. Step 3: Cross multiply
    270,584.75x = 405,898.29 × 90,670.79
  4. Step 4: Simplify right side
    270,584.75x = 36,803,119,628.69
  5. Step 5: Solve for x
    x = 36,803,119,628.69/270,584.75
  6. Step 6: Final answer
    x = 136,013.28

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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.