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Finding the Fourth Proportional to 353,978.28, 488,484.38 and 192,835.26

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Solution

The fourth proportional to 353,978.28, 488,484.38 and 192,835.26 is: 266,109.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,978.28 : 488,484.38 = 192,835.26 : x
  2. Step 2: Convert to fraction form
    353,978.28/488,484.38 = 192,835.26/x
  3. Step 3: Cross multiply
    353,978.28x = 488,484.38 × 192,835.26
  4. Step 4: Simplify right side
    353,978.28x = 94,197,012,423.24
  5. Step 5: Solve for x
    x = 94,197,012,423.24/353,978.28
  6. Step 6: Final answer
    x = 266,109.58

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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.