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Finding the Fourth Proportional to 251,870.20, 377,717.10 and 74,330.20

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Solution

The fourth proportional to 251,870.20, 377,717.10 and 74,330.20 is: 111,469.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,870.20 : 377,717.10 = 74,330.20 : x
  2. Step 2: Convert to fraction form
    251,870.20/377,717.10 = 74,330.20/x
  3. Step 3: Cross multiply
    251,870.20x = 377,717.10 × 74,330.20
  4. Step 4: Simplify right side
    251,870.20x = 28,075,787,586.42
  5. Step 5: Solve for x
    x = 28,075,787,586.42/251,870.20
  6. Step 6: Final answer
    x = 111,469.27

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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.