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Finding the Fourth Proportional to 383,871.88, 529,913.06 and 247,972.08

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Solution

The fourth proportional to 383,871.88, 529,913.06 and 247,972.08 is: 342,311.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,871.88 : 529,913.06 = 247,972.08 : x
  2. Step 2: Convert to fraction form
    383,871.88/529,913.06 = 247,972.08/x
  3. Step 3: Cross multiply
    383,871.88x = 529,913.06 × 247,972.08
  4. Step 4: Simplify right side
    383,871.88x = 131,403,646,082.00
  5. Step 5: Solve for x
    x = 131,403,646,082.00/383,871.88
  6. Step 6: Final answer
    x = 342,311.20

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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.