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Finding the Fourth Proportional to 355,643.70, 532,687.95 and 276,134.10

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Solution

The fourth proportional to 355,643.70, 532,687.95 and 276,134.10 is: 413,597.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,643.70 : 532,687.95 = 276,134.10 : x
  2. Step 2: Convert to fraction form
    355,643.70/532,687.95 = 276,134.10/x
  3. Step 3: Cross multiply
    355,643.70x = 532,687.95 × 276,134.10
  4. Step 4: Simplify right side
    355,643.70x = 147,093,307,654.10
  5. Step 5: Solve for x
    x = 147,093,307,654.10/355,643.70
  6. Step 6: Final answer
    x = 413,597.39

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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.