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Finding the Fourth Proportional to 381,288.96, 526,202.40 and 220,173.12

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Solution

The fourth proportional to 381,288.96, 526,202.40 and 220,173.12 is: 303,852.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,288.96 : 526,202.40 = 220,173.12 : x
  2. Step 2: Convert to fraction form
    381,288.96/526,202.40 = 220,173.12/x
  3. Step 3: Cross multiply
    381,288.96x = 526,202.40 × 220,173.12
  4. Step 4: Simplify right side
    381,288.96x = 115,855,624,159.49
  5. Step 5: Solve for x
    x = 115,855,624,159.49/381,288.96
  6. Step 6: Final answer
    x = 303,852.55

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1.5x scale

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.