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Finding the Fourth Proportional to 353,522.28, 487,871 and 192,387.72

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Solution

The fourth proportional to 353,522.28, 487,871 and 192,387.72 is: 265,500.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,522.28 : 487,871 = 192,387.72 : x
  2. Step 2: Convert to fraction form
    353,522.28/487,871 = 192,387.72/x
  3. Step 3: Cross multiply
    353,522.28x = 487,871 × 192,387.72
  4. Step 4: Simplify right side
    353,522.28x = 93,860,389,344.12
  5. Step 5: Solve for x
    x = 93,860,389,344.12/353,522.28
  6. Step 6: Final answer
    x = 265,500.63

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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.