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Finding the Fourth Proportional to 353,445.49, 530,185.75 and 100,763.21

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Solution

The fourth proportional to 353,445.49, 530,185.75 and 100,763.21 is: 151,149.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,445.49 : 530,185.75 = 100,763.21 : x
  2. Step 2: Convert to fraction form
    353,445.49/530,185.75 = 100,763.21/x
  3. Step 3: Cross multiply
    353,445.49x = 530,185.75 × 100,763.21
  4. Step 4: Simplify right side
    353,445.49x = 53,423,215,415.33
  5. Step 5: Solve for x
    x = 53,423,215,415.33/353,445.49
  6. Step 6: Final answer
    x = 151,149.80

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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.