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Finding the Fourth Proportional to 353,165.70, 487,378.50 and 192,031.80

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Solution

The fourth proportional to 353,165.70, 487,378.50 and 192,031.80 is: 265,009.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,165.70 : 487,378.50 = 192,031.80 : x
  2. Step 2: Convert to fraction form
    353,165.70/487,378.50 = 192,031.80/x
  3. Step 3: Cross multiply
    353,165.70x = 487,378.50 × 192,031.80
  4. Step 4: Simplify right side
    353,165.70x = 93,592,170,636.30
  5. Step 5: Solve for x
    x = 93,592,170,636.30/353,165.70
  6. Step 6: Final answer
    x = 265,009.23

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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.