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Finding the Fourth Proportional to 536,622.87, 805,303.37 and 221,079.78

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Solution

The fourth proportional to 536,622.87, 805,303.37 and 221,079.78 is: 331,771.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,622.87 : 805,303.37 = 221,079.78 : x
  2. Step 2: Convert to fraction form
    536,622.87/805,303.37 = 221,079.78/x
  3. Step 3: Cross multiply
    536,622.87x = 805,303.37 × 221,079.78
  4. Step 4: Simplify right side
    536,622.87x = 178,036,291,872.86
  5. Step 5: Solve for x
    x = 178,036,291,872.86/536,622.87
  6. Step 6: Final answer
    x = 331,771.72

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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.