Home / 381,811.63-526,836.81-220,681.72

Finding the Fourth Proportional to 381,811.63, 526,836.81 and 220,681.72

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Solution

The fourth proportional to 381,811.63, 526,836.81 and 220,681.72 is: 304,504.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,811.63 : 526,836.81 = 220,681.72 : x
  2. Step 2: Convert to fraction form
    381,811.63/526,836.81 = 220,681.72/x
  3. Step 3: Cross multiply
    381,811.63x = 526,836.81 × 220,681.72
  4. Step 4: Simplify right side
    381,811.63x = 116,263,253,390.11
  5. Step 5: Solve for x
    x = 116,263,253,390.11/381,811.63
  6. Step 6: Final answer
    x = 304,504.22

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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.