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Finding the Fourth Proportional to 353,757.35, 488,109.30 and 210,489.41

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Solution

The fourth proportional to 353,757.35, 488,109.30 and 210,489.41 is: 290,430.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,757.35 : 488,109.30 = 210,489.41 : x
  2. Step 2: Convert to fraction form
    353,757.35/488,109.30 = 210,489.41/x
  3. Step 3: Cross multiply
    353,757.35x = 488,109.30 × 210,489.41
  4. Step 4: Simplify right side
    353,757.35x = 102,741,838,572.51
  5. Step 5: Solve for x
    x = 102,741,838,572.51/353,757.35
  6. Step 6: Final answer
    x = 290,430.26

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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.