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Finding the Fourth Proportional to 353,643.05, 530,592.47 and 218,549

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Solution

The fourth proportional to 353,643.05, 530,592.47 and 218,549 is: 327,902.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,643.05 : 530,592.47 = 218,549 : x
  2. Step 2: Convert to fraction form
    353,643.05/530,592.47 = 218,549/x
  3. Step 3: Cross multiply
    353,643.05x = 530,592.47 × 218,549
  4. Step 4: Simplify right side
    353,643.05x = 115,960,453,726.03
  5. Step 5: Solve for x
    x = 115,960,453,726.03/353,643.05
  6. Step 6: Final answer
    x = 327,902.54

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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.