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Finding the Fourth Proportional to 365,311.34, 548,011.29 and 128,605.58

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Solution

The fourth proportional to 365,311.34, 548,011.29 and 128,605.58 is: 192,923.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,311.34 : 548,011.29 = 128,605.58 : x
  2. Step 2: Convert to fraction form
    365,311.34/548,011.29 = 128,605.58/x
  3. Step 3: Cross multiply
    365,311.34x = 548,011.29 × 128,605.58
  4. Step 4: Simplify right side
    365,311.34x = 70,477,309,797.00
  5. Step 5: Solve for x
    x = 70,477,309,797.00/365,311.34
  6. Step 6: Final answer
    x = 192,923.96

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1.5x scale

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.