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Finding the Fourth Proportional to 381,425.76, 526,369.59 and 211,659.89

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Solution

The fourth proportional to 381,425.76, 526,369.59 and 211,659.89 is: 292,091.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,425.76 : 526,369.59 = 211,659.89 : x
  2. Step 2: Convert to fraction form
    381,425.76/526,369.59 = 211,659.89/x
  3. Step 3: Cross multiply
    381,425.76x = 526,369.59 × 211,659.89
  4. Step 4: Simplify right side
    381,425.76x = 111,411,326,886.90
  5. Step 5: Solve for x
    x = 111,411,326,886.90/381,425.76
  6. Step 6: Final answer
    x = 292,091.77

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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.