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Finding the Fourth Proportional to 381,384.75, 526,310.96 and 211,646.19

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Solution

The fourth proportional to 381,384.75, 526,310.96 and 211,646.19 is: 292,071.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,384.75 : 526,310.96 = 211,646.19 : x
  2. Step 2: Convert to fraction form
    381,384.75/526,310.96 = 211,646.19/x
  3. Step 3: Cross multiply
    381,384.75x = 526,310.96 × 211,646.19
  4. Step 4: Simplify right side
    381,384.75x = 111,391,708,381.01
  5. Step 5: Solve for x
    x = 111,391,708,381.01/381,384.75
  6. Step 6: Final answer
    x = 292,071.74

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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.