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Finding the Fourth Proportional to 490,507.75, 735,360.94 and 253,918.63

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Solution

The fourth proportional to 490,507.75, 735,360.94 and 253,918.63 is: 380,670.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,507.75 : 735,360.94 = 253,918.63 : x
  2. Step 2: Convert to fraction form
    490,507.75/735,360.94 = 253,918.63/x
  3. Step 3: Cross multiply
    490,507.75x = 735,360.94 × 253,918.63
  4. Step 4: Simplify right side
    490,507.75x = 186,721,842,440.31
  5. Step 5: Solve for x
    x = 186,721,842,440.31/490,507.75
  6. Step 6: Final answer
    x = 380,670.52

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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.