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Finding the Fourth Proportional to 381,477.16, 526,533.42 and 220,425.40

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Solution

The fourth proportional to 381,477.16, 526,533.42 and 220,425.40 is: 304,241.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,477.16 : 526,533.42 = 220,425.40 : x
  2. Step 2: Convert to fraction form
    381,477.16/526,533.42 = 220,425.40/x
  3. Step 3: Cross multiply
    381,477.16x = 526,533.42 × 220,425.40
  4. Step 4: Simplify right side
    381,477.16x = 116,061,339,716.87
  5. Step 5: Solve for x
    x = 116,061,339,716.87/381,477.16
  6. Step 6: Final answer
    x = 304,241.91

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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.