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Finding the Fourth Proportional to 353,271.90, 487,520.95 and 192,130.14

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Solution

The fourth proportional to 353,271.90, 487,520.95 and 192,130.14 is: 265,142.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,271.90 : 487,520.95 = 192,130.14 : x
  2. Step 2: Convert to fraction form
    353,271.90/487,520.95 = 192,130.14/x
  3. Step 3: Cross multiply
    353,271.90x = 487,520.95 × 192,130.14
  4. Step 4: Simplify right side
    353,271.90x = 93,667,468,376.43
  5. Step 5: Solve for x
    x = 93,667,468,376.43/353,271.90
  6. Step 6: Final answer
    x = 265,142.71

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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.